Timeline of events in Pokémon the Series: Diamond and Pearl

In , Ash Ketchum arrives in the Sinnoh region with his and meets , a new aspiring to become a Top Pokémon Coordinator. Joined by his old , the trio s through Sinnoh as Ash aims to collect eight Gym Badges for the Sinnoh League, while Dawn participates in Pokémon Contests. Along the way, Ash has his ideologies as a Trainer challenged by his newest rival, Paul, and the trio gets involved in a plot schemed by the villainous Team Galactic, linking their journey with the fate of the entire Sinnoh region.
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==Timeline==
These events are listed in chronological order as opposed to solely release order.
===Sinnoh===
Episode 	Details
Following a Maiden's Voyage! 	
* , a beginning and aspiring , leaves Twinleaf Town to start her Pokémon journey.
* Dawn sees the spirit of a at Lake Verity.
* Dawn chooses as her first partner Pokémon and receives a Pokédex and six s from Professor Rowan.
* arrives at Sinnoh, only to have taken away and lost by , who followed him to the region.
Two Degrees of Separation! 	
* decides to make her debut at the Jubilife City Pokémon Contest.
* Dawn tries to a and a , but fails both times.
* Dawn runs into Ash's Pikachu and attempts to catch him, but fails since he has a already.
* Ash's Pikachu accidentally destroys Dawn's bicycle.
* Dawn meets and fights for the first time.
* Ash meets Professor Rowan for the first time.
* James is revealed to own a , which he retrieves from his second summer cottage.
* arrives in Sinnoh and rejoins with .
* Ash catches a .
When Pokémon Worlds Collide! 	
* and meet Paul, Ash's newest rival.
* Paul three and two, keeping the one that knows , only to release it later as well.
* Ash and Brock find and meet for the first time in the middle of a battle with .
* Ash changes into a , sent to him by .
* Ash and Brock decide to travel with Dawn.
* Brock meets Professor Rowan for the first time, while Dawn meets Paul for the first time.
* Paul challenges Ash to a three-on-three battle, which ends in a tie.
* Paul is revealed to own a .
* Ash decides to head for the Oreburgh Gym after the .
Dawn Of A New Era! 	
* fails to a for the second time.
* and meet Nando.
* Dawn has her first against Nando and loses.
* reveals that he has only brought with him to Sinnoh, having left at the Pewter Gym.
* Ash registers for the Sinnoh League.
* Ash, Dawn, and Brock learn that James owns a .
* James's Carnivine is revealed to know .
* Nando's evolves into .
* Ash has a battle with Nando and wins.
* Nando declares his intention to compete for both Badges and Ribbons, thus making him a rival of both Ash and Dawn.
Gettin' Twiggy With It! 	
* James's Carnivine is revealed to know .
* catches a .
Different Strokes for Different Blokes 	
* and encounter Paul again.
* Paul's Chimchar is revealed to know .
* Paul a but subsequently it.
* Paul catches an .
* Ash has a battle against Paul and loses, suffering his first loss to Paul.
Like It or Lup It! 	
* Dawn's Piplup learns how to use Moves.
Gymbaliar 	
* Jessie's Dustox is revealed to know .
* a .
Setting the World on its Buneary! 	
* Dawn catches a , making it her first caught Pokémon in her journey.
Not on My Watch Ya Don't! 	
* and arrive in Jubilife City.
* obtains a Pokétch.
Mounting a Coordinator Assault! 	
* , , and meet Zoey, Dawn's first rival.
* Ash and Dawn are issued a Sinnoh Contest Pass and obtain a Ribbon case, Ball Capsule, and Seals.
* Jessie adopts a persona by the name of Jessilina to participate in Pokémon Contests in the Sinnoh region.
* Ash, Dawn, Zoey, and Jessilina enter the Jubilife City Pokémon Contest and compete in the Performance Stage.
** In the process, Dawn makes her debut as a and Ash participates in an official Pokémon Contest for the first time.
Arrival of a Rival! 	
* , , Jessilina, and Zoey advance to the Battle Stage of the Jubilife City Pokémon Contest.
* James's Carnivine is revealed to know .
* Zoey defeats Ash in the quarterfinals, Dawn in the semifinals, and Jessilina in the finals.
* Zoey wins the Jubilife Contest and earns her second Ribbon, the .
A Staravia is Born! 	
* 's is revealed to have started learning .
* Jessie's Dustox is revealed to know .
* Brock's Bonsly learns .
* Ash's Starly evolves into and masters Aerial Ace.
Leave It To Brocko! 	
* 's evolves into .
Shapes of Things to Come! 	
* and arrive in Oreburgh City and meet Roark, the local Gym Leader.
* Ash receives a Sinnoh Badge case.
* Paul is revealed to have obtained an .
* Paul's Chimchar is revealed to have as his Ability.
* Paul defeats Roark in a Gym and earns the .
A Gruff Act to Follow! 	
* Paul gives his to a young boy.
* battles Roark in his first Sinnoh Gym match and loses.
Wild in the Streets! 	
* Brock's Sudowoodo is revealed to have as its Ability.
* Jessie attempts and fails to an .
* Roark's evolves into .
* learns that a Pokémon Contest will be held in Floaroma Town.
O'er the Rampardos we Watched! 	
* has a rematch with Roark and wins, earning him his first Sinnoh League Badge, the .
Twice Smitten, Once Shy! 	
* , , and recatches a .
** While Pachirisu is released, Jessie tries to catch it, but fails.
Mutiny in the Bounty! 	
* and meet Pokémon Hunter J.
Ya See We Want An Evolution! 	
* encounters the Magikarp salesman again.
Borrowing on Bad Faith! 	
* and Jessie enter an unofficial Pokémon Contest.
* Jessie defeats Dawn in the second round and wins her first Pokémon Contest.
Oh Do You Know The Poffin Plan! 	
* and arrive in Floaroma Town.
* learns how to make Poffins.
Getting the Pre-Contest Titters! 	
* meets up with , her childhood friend and newest rival.
* and meet Kenny for the first time.
* Ash has a battle with Kenny, which gets interrupted by .
* Dawn's Piplup learns .
* Dawn, Kenny, and Jessilina enter the Floaroma Town Pokémon Contest.
Settling a Not-So-Old Score! 	
* , , and Jessilina advance to the Battle Stage of the Floaroma Town Pokémon Contest.
* Dawn defeats Kenny in the final round and wins the Floaroma Contest.
* Dawn earns her first Contest Ribbon, the .
The Champ Twins! 	
* and have their first Tag Battle together.
Some Enchanted Sweetening 	
* , , and meet Cheryl, who joins .
* Cheryl a , which later evolves into .
The Grass-Type is Always Greener! 	
* and meet Gardenia.
* Ash has an unofficial with Gardenia, and loses.
An Angry Combeenation! 	
* Cheryl finds the Honey she was searching for, and leaves the group.
All Dressed Up with Somewhere to Go! 	
* , , , Jessie, and James all enter the Pokémon Dress-Up Contest.
* Brock wins the Dress-Up Contest, receiving a Pokémon Egg as a prize.
Buizel Your Way Out of This! 	
* and meet up with Zoey again.
* Dawn learns that a Pokémon Contest will be held in Hearthome City.
* a that Ash and Zoey previously failed to catch.
An Elite Greet and Meet! 	
* and meet Lucian, a member of the Sinnoh Elite Four.
* Ash learns about the .
* and battle Lucian and his , but are defeated.
* Buizel begins to obey Dawn.
* Dawn has a rematch with Lucian, but he calls it off after seeing how well Dawn and Buizel now work together.
A Secret Sphere of Influence! 	
* and arrive in Eterna City and meet up with Nando again.
* Nando is revealed to own a and to have won the , as well as his first Ribbon.
* Ash also meets the Officer Jenny from Viridian City again.
* Ash, , and learn that Gardenia is the Gym Leader of the Eterna Gym.
* , hired by Team Galactic, attempts to steal the Adamant Orb from the Eterna Historical Museum, but are foiled.
The Grass Menagerie! 	
* has an official Gym with Gardenia and wins, earning the .
One Big Happiny Family! 	
* 's hatches into .
* Brock polishes a white stone into an Oval Stone for Happiny.
The Rise of Darkrai 	
* obtains a Lunar Wing.
* Dawn competes in the Alamos Town Pokémon Contest, which is eventually won by Allegra.
Top-Down Training! 	
* and encounter Paul again.
* Ash, his friends, and Paul meet , the Sinnoh League .
* Paul's Chimchar is revealed to have learned .
* Paul is revealed to own a and a .
* Paul's first partner Pokémon is revealed to have been a , which has already evolved into a .
* Paul has a Full Battle against Cynthia and loses by forfeit.
* Paul is revealed to have traveled through Hoenn, Johto, and Kanto and participated in their respective s.
* The Lustrous Orb is discovered near Celestic Town.
A Stand-Up Sit-Down! 	
* and meet up with Zoey again.
* Zoey is revealed to have a in where caught her .
* Dawn learns that the and the Sinnoh Grand Festival will follow the Double Performance format.
* is revealed to have become a Top Coordinator.
* Marina's Wani-Wani is revealed to have evolved into a .
* Dawn attempts the Ice Aqua Jet combination for the first time and fails.
* Jessilina has a two-on-two Contest Battle against Zoey and loses.
Mass Hip-Po-Sis! 	
* and encounter a roaming .
Ill-Will Hunting! 	
* and meet up with , with meeting him for the first time.
* Ash and his friends encounter J again.
A Maze-ing Race! 	
* and encounter Paul again.
* Paul attemps to a , but it is left unclear whether he succeeds or not.
* obtains the app for her Pokétch.
Sandshrew's Locker! 	
* and meet Mira, who later s them to Hearthome City with the help of her .
Dawn's Early Night! 	
* and meet up with Nando again.
* Ash learns that the Gym Leader of the Hearthome Gym is currently away.
* Nando is revealed to have obtained a .
* Ash and decide to enter the Hearthome City Tag Battle Competition after learning about it from Nando.
* meets up with Zoey again while Nando meets her for the first time.
* Dawn, Zoey, Nando, and Jessilina enter the Hearthome City Pokémon Contest.
* Dawn loses in the Performance Stage while her rivals advance to the Battle Stage.
* Nando defeats Jessilina and Zoey to win the Hearthome Ribbon, his second Contest Ribbon overall.
Tag! We're It! 	
* , , and enter the Hearthome City Tag Battle Competition and are paired with Paul, Conway, and Holly, respectively.
* Paul's Chimchar is revealed to have learned .
* The three teams advance to the second round of the competition.
Glory Blaze! 	
* Paul is revealed to have a after he returned to Sinnoh.
* Conway is revealed to own an .
* and Paul, and Conway, and and Holly advance to the semifinals.
* Paul .
* Ash invites Chimchar to join his team.
Smells Like Team Spirit! 	
* joins 's party.
* and Conway win their semifinal match.
* Ash and Paul defeat and Holly in the semifinals.
* Conway is revealed to own a .
* Paul's evolves into an .
* Ash and Paul defeat Dawn and Conway in the finals, winning the Hearthome City Tag Battle Competition and receiving a Soothe Bell each.
* Paul gives his Soothe Bell to Ash.
* Ash learns of a Gym in Veilstone City and decides to head there next.
Tears For Fears! 	
* Ash's Chimchar overcomes his fear of .
Once There Were Greenfields! 	
* encounters Gardenia again.
* and have a Tag Battle with James and Gardenia and win.
* James's Cacnea begins to learn .
* James leaves his with Gardenia for .
Throwing the Track Switch 	
* is revealed to have earned the Ribbon and another Ribbon.
* and meet up with Zoey again.
* learns that the next Pokémon Contest will be held in Solaceon Town.
* Ash and Dawn trade their and .
Journey to the Unown! 	
* and arrive in Solaceon Town and meet again.
* 's learns and later evolves into .
* Kenny is revealed to have obtained a .
* Saturn steals a cube from the Solaceon Ruins.
* Kenny agrees to help learn .
Team Shocker! 	
* Ash's Turtwig continues to learn with 's help.
* , Kenny, and Jessilina enter the Solaceon Town Pokémon Contest.
* Dawn fails to pass the Performance Stage for the second time in a row, resulting in her losing confidence in her abilities.
* Jessilina defeats Kenny in the finals and wins the Solaceon Contest, earning the , her first Contest Ribbon.
* Zoey returns to advise Dawn in matters of Pokémon Contest performances.
Tanks for the Memories! 	
* 's learns and is also revealed to know .
* Ash's Turtwig continues to learn .
* begins to suffer a lack of confidence after her recent Pokémon Contest losses.
Hot Springing a Leak! 	
* reunites with her childhood friend Leona, while and meet her for the first time.
* Dawn and Leona have a Tag Battle against Ash and Brock, which ends in a draw.
Riding the Winds of Change! 	
* and meet Paul again.
* Paul a .
* Ash's Turtwig masters .
* Ash catches a .
Sleight of Sand! 	
* and encounter the again.
* meets Butch and Cassidy for the first time.
* Butch is revealed to own a while Cassidy is revealed to own a .
Lost Leader Strategy! 	
* and arrive in Veilstone City and meet Maylene, the local Gym Leader.
* Ash and his friends meet Reggie, Paul's brother and a who takes care of .
* Reggie reveals some events that happened to Paul:
** Paul's evolved into .
** Paul a , replacing his .
** Paul defeated Maylene and earned the .
* Ash has a with Reggie and wins.
* Reggie promises to help Ash to teach his to use .
* decides to have a Gym battle with Maylene to rebuild Maylene's confidence.
Crossing the Battle Line! 	
* Ash's Staravia begins to learn with the aid of Reggie and his .
* has her first-ever Gym with Maylene, and loses.
* The outcome of the battle restores the confidence of both Dawn and Maylene.
A Triple Fighting Chance! 	
* Ash's Staravia perfects .
* Ash's Buizel learns and is revealed to have as his Ability.
* Ash has a Gym with Maylene, which ends in a tie, but he still receives the .
Enter Galactic! 	
* decides to head for the Pastoria Gym next via Lake Valor.
* Ash and learn of Team Galactic and encounter them for the first time.
* Ash and his friends encounter Team Galactic Saturn for the first time.
* Ash's Pikachu and Paul's Electabuzz settle their differences.
* Reggie prepares to send Electabuzz back to Paul.
* The cube Team Galactic stole from the Solaceon Ruins earlier is revealed to be the Spear Key.
* Brock's Croagunk starts a rivalry with Saturn's Toxicroak.
* Team Galactic begins the development of the Red Chain.
The Bells Are Singing! 	
* Ash's Gligar is revealed to know , , and .
Pokémon Ranger and the Kidnapped Riolu! (Part 1)	
* and meet Kellyn.
* Ash and meet Solana again, while meets her for the first time.
* Dawn learns about Pokémon Rangers, and also learns that Ash can use Aura.
* Ash and his friends meet a special Riolu that is capable of using .
Pokémon Ranger and the Kidnapped Riolu! (Part 2)	
* J steals the special .
* saves Riolu from J and J is working for.
Crossing Paths 	
* Jessie her so she could breed.
Pika and Goliath! 	
* reveals that he still has the Thunder Stone he received in Vermilion City.
* Ash's Pikachu reaffirms his decision to not evolve into .
* steals Ash's Thunder Stone, planning to sell it.
Our Cup Runneth Over! 	
* learns about the upcoming Wallace Cup and decides to enter.
* and meet Wallace, a Master and the current Hoenn League .
* Wallace recommends that Ash enters the Wallace Cup with , which he agrees to do.
* contacts Ash from Snowpoint City.
A Full Course Tag Battle! 	
* arrives at Lake Valor for the Wallace Cup.
* and May meet for the first time.
* May's is revealed to have evolved into a while in Snowpoint City, and to have learned and .
* It is revealed in a flashback that Drew's has evolved into a .
* May is revealed to have won three Johto Ribbons.
Staging A Heroes' Welcome! 	
* , , , Jessilina, and Zoey enter the Wallace Cup.
* May and Zoey meet for the first time.
* May's is revealed to have evolved into a during her travels in Johto and learned .
* Zoey is revealed to have obtained a .
* Ash, Dawn, May, and Zoey make it to the Contest Battles while Jessilina loses in the Performance Stage.
Pruning a Passel of Pals! 	
* encounters near Lake Valor.
* Ash and compare about their encounters with the .
* 's is revealed to have evolved all the way into a during her travels in Johto.
* perfects the Ice Aqua Jet combination.
* Ash loses his second match in the Battle Stage to .
* May, , Zoey, and Kyle advance to the semifinals.
Strategy With a Smile! 	
* and defeat and Zoey, respectively, in the semifinals of the Wallace Cup.
* May's Beautifly is revealed to have learned .
* Dawn and May face each other in the finals.
* May's Glaceon is revealed to have learned , , and .
* Dawn wins the Wallace Cup and her second Ribbon, the , finally breaking her losing streak.
* May and Zoey leave the group, and May returns to Johto.
The Thief That Keeps on Thieving! 	
* Jessie a .
* sends Yanma to , who sends her back after deciding he does not need her.
* Jessie's Yanma evolves into .
Chim - Charred! 	
* Paul tries to a , but fails when Ash's Gligar accidentally interrupts the encounter.
* and encounter Paul again.
* Ash challenges Paul to a three-on-three , but it gets called off after the first two duels.
* Ash's Chimchar activates , which causes him to go on a violent rampage until he is stopped by Ash.
Cream of the Croagunk Crop! 	
* and arrive in Pastoria City and meet the local Gym Leader, Crasher Wake.
* James is revealed to have his at the Great Marsh.
* enters the Pastoria Croagunk Festival competition and loses.
A Crasher Course in Power! 	
* has a Gym with Crasher Wake and wins, earning the .
Hungry For the Good Life! 	
* Jessie's Yanmega is revealed to know .
* a .
* Dawn learns that a Pokémon Contest will be held in Celestic Town.
Fighting Fear With Fear! 	
* and meet up with again.
* Gary gives Ash a Razor Fang.
* Ash's perfects .
* Ash uses the Razor Fang to evolve his Gligar into a .
* Jessie's Yanmega is revealed to know .
Arriving in Style! 	
* and return to Hearthome City and learn that the Gym Leader still has not returned.
* Ash, , and Jessilina participate in the Hearthome Collection.
* Dawn wins the Hearthome Collection while Ash receives a special award for his unique performance.
* Dawn turns down the campaign to focus on her career as a Pokémon Coordinator.
The Psyduck Stops Here! 	
* Dawn's Swinub is revealed to know .
Camping It Up! 	
* , , and enroll in the Pokémon Summer Academy.
* Ash and meet up with Conway again.
* Ash and his friends meet Angie, another student in the Summer Academy.
Up Close and Personable! 	
* and continue their week in the Pokémon Summer Academy.
Ghoul Daze! 	
* and continue their week in the Pokémon Summer Academy.
One Team, Two Team, Red Team, Blue Team! 	
* , , , Jessie, Conway, and Angie compete in the Pokémon Triathlon and Ash wins.
* The Red Team gets the most points.
* The week in the Pokémon Summer Academy ends.
Playing the Leveling Field! 	
* and meet Fantina, the Hearthome City Gym Leader.
* Zoey has a Contest Battle with Fantina and loses.
* Ash has an unofficial with Fantina and forfeits.
* Fantina's evolves into a .
* Zoey is revealed to have won her third Ribbon.
Battling the Generation Gap! 	
* and arrive in Celestic Town.
* , Jessilina, and Lila enter the Celestic Town Pokémon Contest.
* Dawn meets Lila, a famous Pokémon Stylist and an old rival of Johanna.
* Dawn defeats Lila in the final round and wins the Celestic Contest.
* Dawn earns the , her third Contest Ribbon overall.
Losing Its Lustrous! 	
* Team Galactic steals the Adamant Orb.
* and meet again.
* Ash and his friends meet Professor Carolina and Cyrus for the first time.
* Ash and learn that the mysterious Pokémon they saw at Lake Verity and Lake Valor were and .
* Brock's Croagunk is revealed to have as his Ability.
* Ash and his friends encounter Mars, another Team Galactic .
Double Team Turnover! 	
* is revealed to own a .
* Team Galactic obtains the Lustrous Orb.
* Cyrus is revealed to be the boss of Team Galactic.
* Team Galactic begins plans to capture the .
If the Scarf Fits, Wear It! 	
* and meet up with Angie again.
A Trainer and Child Reunion! 	
* and meet Aaron, a member of the Sinnoh Elite Four.
* Aaron reveals he is going to battle for the title of Sinnoh League .
* Aaron's Beautifly, which he abandoned as a child, rejoins his team.
Aiding the Enemy! 	
* Aaron battles for the title of Pokémon Champion and loses.
* and meet up with Paul again.
* Paul is revealed to have won the .
* Ash has a one-on-one battle with Paul and loses.
* Ash's Turtwig evolves into .
* Paul's Torterra teaches Grotle how to deal with his reduced .
Barry's Busting Out All Over! 	
* and return to Hearthome City and meet .
* James learns from Barry that his has perfected with Gardenia's help.
* Ash battles Barry and wins.
* Ash prepares for his Gym against Fantina.
A Shield with a Twist! 	
* Jessilina enters the Majolica Town Pokémon Contest and wins, earning her second Ribbon.
* invents the Counter Shield technique.
* Ash has an official Gym against Fantina and wins, earning the .
Jumping Rocket Ship! 	
* and arrive in Canalave City.
* claims to be learning , but refuses to use the move due to its scariness.
* leaves the group to train at Iron Island.
Sleepless in Pre-Battle! 	
* arrives at the Canalave Gym, only to find out that the local Gym Leader is away training on Iron Island.
* 's evolves into .
A Breed Stampede! 	
* learns that a Pokémon Contest is scheduled to be held in Chocovine Town.
* is revealed to have earned the Ribbon, his third overall.
* Nando is revealed to have earned the Ribbon, his fourth overall.
* Dawn's Piloswine learns and starts disobeying its Trainer.
* Ash's Gliscor is revealed to have learned and learns .
* Ash's Grotle begins to utilize the lessons that were taught to it by Paul's Torterra.
* Dawn's Piloswine evolves into , but remains disobedient.
* learns that the Canalave Gym Leader has returned.
Ancient Family Matters! 	
* and meet Byron, the Canalave City Gym Leader.
* Ash and his friends also meet Roark again, and find out that he is Byron's son.
Dealing with Defensive Types! 	
* battles and defeats Byron in a Gym , earning the .
Steeling Peace of Mind! 	
* decides to head for Snowpoint City for his next Gym .
* After receiving a call from , Ash and leave Canalave City for Iron Island.
* Ash and his friends meet Riley.
* Barry is revealed to own a .
* The group encounters Mars of Team Galactic again.
* Team Galactic excavates and, using the Spear Key, causes it to send out a strange beam that impacts Mt. Coronet.
Saving the World from Ruins! 	
* and stop Team Galactic's Iron Island operation.
* James's Carnivine learns .
* Team Galactic escapes with the Spear Key again.
* Team Galactic learns that Spear Pillar is located somewhere on Mt. Coronet.
* Professor Carolina arrives on Iron Island to investigate the connection between , Veilstone City's meteorites, and Spear Pillar.
Cheers on Castaways Isle! 	
* and make it to Chocovine Town.
Another One Gabites the Dust! 	
* meets Ursula, a fellow and her newest rival.
* Dawn's Pachirisu learns .
* Dawn, Jessilina, and Ursula enter the Chocovine Town Pokémon Contest.
* Jessie's Yanmega is revealed to have as her Ability.
* Dawn defeats Ursula in the final round and wins the Chocovine Contest.
* Dawn earns her fourth Contest Ribbon, the .
Noodles! Roamin' Off! 	
* The Team Rocket trio disbands, but eventually gets together again.
Pursuing a Lofty Goal! 	
* and meet Paul again.
* Ash, James, and Paul enter the Squallville PokéRinger competition.
* Ash's evolves into and learns .
* Ash defeats Paul for the first time and wins the Squallville PokéRinger.
Trials and Adulations! 	
* begins to obey .
The Lonely Snover! 	
* Ash's Grotle learns .
* learns that a Pokémon Contest will be held in Sandalstraw Town.
Stopped in the Name of Love! 	
* and arrive in Sandalstraw Town and meet up with and again.
* The group learns about an upcoming Pokémon Ping Pong Tournament, which Barry is planning to enter.
* Dawn's Piplup begins to evolve, but chooses not to.
* Nurse Joy gives an Everstone to prevent Piplup's evolution.
Old Rivals, New Tricks! 	
* , , and Jessilina compete in the Sandalstraw Town Pokémon Contest.
* Kenny is revealed to have obtained a .
* Dawn battles Kenny in the finals and loses, resulting in her first loss to Kenny.
* Kenny wins the Sandalstraw Contest and earns his fourth Ribbon, the Sandalstraw Ribbon.
* Kenny leaves the group.
* discovers her talent for ping pong.
* Dawn decides to enter the Pokémon Ping Pong Tournament along with and .
To Thine Own Pokémon Be True! 	
* , , , and Jessie all enter the Pokémon Ping Pong Tournament, but they end up being defeated.
* Barry leaves .
* Dawn's Ambipom leaves with O for to become a Ping Pong champion.
Battling a Cute Drama! 	
* , , and all receive winter clothing from Johanna and change into it.
Classroom Training! 	
* and arrive in Snowpoint City and meet up with Zoey again.
* Ash and his friends meet Candice, the Snowpoint City Gym Leader.
* Zoey is revealed to have earned her fourth Ribbon.
Sliding Into Seventh! 	
* has a Gym against Candice and wins, earning the .
* Ash and encounter Paul again.
* Zoey meets Paul for the first time.
A Pyramiding Rage! 	
* and meet Reggie again.
* Paul learns that Ash has completed the before.
* arrives at Snowpoint City in order to investigate the Snowpoint Temple.
* Ash and encounter Brandon again, while meets him for the first time.
* Paul challenges Brandon to a Full Battle, but loses.
* Paul is revealed to have obtained a , a , and a .
* Reggie suggests that Paul and Ash should have a Full Battle in ten days.
Pillars of Friendship! 	
* J returns and awakens forcefully at the Snowpoint Temple, resulting in it going on a rampage.
* battles Regigigas and attempts to it in order to stop it, but is stopped by J before he can do so.
* Regigigas is calmed down and returned to the Snowpoint Temple.
* Brandon decides to stay at the Snowpoint Temple in order to rebuild it.
Frozen on Their Tracks! 	
* , , and are revealed to have gone back to wearing their regular outfits.
* Ash and meet Looker.
* Brock's Sudowoodo learns .
* Looker is revealed to be investigating Team Galactic.
Pedal to the Mettle! 	
* and reach Lake Acuity.
* Ash and Paul begin their Full Battle.
* Paul's is revealed to have evolved into a .
Evolving Strategies! 	
* 's evolves into and learns .
* Ash and Paul's Full Battle ends in Paul's victory.
Uncrushing Defeat! 	
* sees the spirit of at Lake Acuity.
* learns that a Pokémon Contest will be held in Lilypad Town.
Promoting Healthy Tangrowth! 	
* Dawn's Mamoswine learns .
Gateway to Ruin! 	
* and meet Looker again, and they, along with , discover that he is a member of the International Police.
* Ash and his friends encounter Team Galactic again and meet Charon for the first time.
Three Sides to Every Story! 	
* and learn that Johanna is going to be the chairperson of the Twinleaf Festival.
Strategy Begins at Home! 	
* and arrive in Twinleaf Town.
* Ash and meet Johanna for the first time in person.
* Johanna is revealed to own an .
* Ash and his friends learn that will be attending the Twinleaf Festival.
* has a two-on-two Contest Battle against Johanna and loses.
A Faux Oak Finish! 	
* meets in person for the first time.
Historical Mystery Tour! 	
* and meet up with , who has returned for the Twinleaf Festival.
* Ash and meet Palmer, Barry's father.
Challenging a Towering Figure! 	
* meets Palmer for the first time.
* learns about the Sinnoh and Palmer's status.
* Ash, , Brock, and all enter the Festival Battle Challenge.
* Ash wins the tournament and is thus allowed to challenge Palmer.
* Ash discovers that his can receive a temporary power-up if it swallows an .
* Ash battles against Palmer and loses.
* Ash learns of a Gym in Sunyshore City and decides to head there after the Lilypad Town Pokémon Contest.
* The Twinleaf Festival ends, and the group leaves Twinleaf Town.
An Egg Scramble! 	
* and meet and Khoury, two Pokémon Trainers from Johto.
* has a with Lyra during the Johto Festival and wins.
* Lyra rewards Dawn of her victory with an , which later hatches into a .
* Lyra and Khoury join the group.
Gone With the Windworks! 	
* Dawn's Cyndaquil has its first Pokémon battle with Ash's Grotle, but the battle is called off by .
* 's is revealed to know , , and .
* is revealed to own a .
A Rivalry to Gible On! 	
* and Khoury attempt to the same , with the latter succeeding.
Dressed for Jess Success! 	
* James disguises himself as Jessilina and participates in his first Pokémon Contest.
* Dawn's Mamoswine enters a Pokémon Contest for the first time.
* competes in the Contest, but is knocked out in the semifinals, suffering her first loss to Jessilina.
* James wins the Lilypad Contest, earning Jessie her third Contest Ribbon.
Bagged Then Tagged! 	
* and have a Tag Battle against and Khoury, which Ash and Dawn win.
* Khoury's evolves into a .
* receives a Pokégear from Khoury's father.
* Lyra and Khoury leave and return to Johto.
Unlocking the Red Chain of Events! 	
* learns that a Pokémon Contest will be held in Daybreak Town and will follow the Double Performance format.
* Team Galactic completes the creation of the Red Chain.
* and encounter Team Galactic Jupiter for the first time.
* Jupiter reveals that Team Galactic knows that saw at Lake Acuity.
* Ash and his friends encounter Looker again and rescue him from the Fuego Ironworks.
* Team Galactic discovers the gateway to the Spear Pillar.
* Cyrus hires J to capture .
The Needs of the Three! 	
* and meet up with again.
* J succeeds in capturing the and hands them over to Team Galactic.
* J's ship is destroyed by and 's and crashes into Lake Valor, leaving J's fate unknown.
* The lake guardians are placed under Cyrus's control, but they manage to Ash, , and to the Team Galactic HQ before being completely subdued.
* Ash and his friends learn that Cyrus is the boss of Team Galactic.
* Cyrus prepares to summon and .
The Battle Finale of Legend! 	
* Cyrus succeeds in briefly summoning and .
* Brock's Croagunk manages to defeat Saturn's Toxicroak, ending their rivalry.
* , , and set , , and free from Team Galactic's control.
* join forces with the to stop Cyrus and becalm Dialga and Palkia.
* Cyrus disappears through a portal created by Dialga and Palkia; his ultimate fate is unknown.
* The previously stolen Adamant Orb and Lustrous Orb are recovered.
* Saturn, Mars, and Jupiter are arrested, thereby bringing down Team Galactic.
The Treasure Is All Mine! 	
* learns that James comes from a rich family.
* James is briefly reunited with his childhood companion Growlie at one of his old mansions.
* Growlie is revealed to know .
* Jessebelle returns once again to try and marry James, but to no avail.
* Dawn encounters Jessebelle for the first time.
Mastering Current Events! 	
* Ash's Gliscor learns .
* leaves his with McCann for training.
Double-Time Battle Training! 	
* Zoey wins the and earns her fifth Ribbon, thereby completing her requirement for the Sinnoh Grand Festival.
* Paul is revealed to have earned the and collected the eight Gym Badges required for the Sinnoh League.
* Zoey is revealed to have obtained a and a .
* attempts the Flame Ice combination for the first time and fails.
* Dawn has a Double Battle against Zoey and loses.
A Meteoric Rise to Excellence! 	
* tries to help a learn .
* Gible starts to follow Ash and .
Gotta Get a Gible! 	
* and meet up with , who is revealed to have won three more Badges, bringing his total count up to six.
* Ash catches the that he previously befriended.
* Ash uses Gible in a battle against and suffers his first loss to Barry.
* Ash's Gible is revealed to know .
Short and To the Punch! 	
* Ash's Buizel learns .
A Marathon Rivalry! 	
* encounters and competes at the Pokéathlon for the first time.
Yes in Dee Dee, It's Dawn! 	
* and arrive in Daybreak Town and meet up with Ursula again.
* Ursula is revealed to have obtained a , a , and a .
* Ash and learn that has a fear of Plusle and Minun.
* Ash and Brock learn why Dawn's friends and Leona call her Dee Dee (Japanese: ピカリ Pikari).
* Dawn, Ursula, and Jessilina all enter the Daybreak and advance to the Battle Stage.
Playing the Performance Encore! 	
* Jessilina is knocked out of the Daybreak Town Pokémon Contest by Ursula.
* Dawn's Cyndaquil is entered in a Pokémon Contest for the first time.
* Dawn's Cyndaquil and perfect the Flame Ice combo.
* defeats Ursula in the final round and wins the Daybreak Contest.
* Dawn earns her fifth Ribbon, the , completing her requirement for entry into the Sinnoh Grand Festival.
* Dawn overcomes her fear of and , and is no longer annoyed with being called Dee Dee (Japanese: ピカリ Pikari).
Fighting Ire with Fire! 	
* and meet up with again.
* Barry is revealed to have earned two more Badges, thus bringing his total to eight and qualifying him for the Sinnoh League.
* Barry meets Paul for the first time and challenges him to a , which Paul refuses.
* learns that there are seven Pokémon Contests remaining before the Sinnoh Grand Festival, and that the event itself will be held at Lake Valor.
* Ash's Monferno activates and goes on a rampage again.
* Ash's evolves into an .
Piplup, Up and Away! 	
* Dawn's Piplup learns .
Flint Sparks the Fire! 	
* and reach Sunyshore City and meet Volkner, the Gym Leader, and Flint of the Sinnoh Elite Four.
* battles Flint and loses.
* Volkner agrees to battle Ash.
Pokémon Ranger: Guardian Signs (Part 1) 	
* receives a mission to stop the Pokémon Pinchers' misdeeds.
* Ben meets Ukulele Pichu and attempts to capture it.
Pokémon Ranger: Guardian Signs (Part 2) 	
* succeeds in capturing Ukulele Pichu.
* Ben confronts the Pinchers at Rasp Cavern.
The Fleeing Tower of Sunyshore! 	
* begins his Gym against Volkner, but it is interrupted when steals the Sunyshore Tower.
* Ash's evolves into and learns .
* Sunyshore Gym is damaged due to Team Rocket's scheme, causing Ash's Gym battle to be postponed until it is repaired.
Teaching the Student Teacher 	
* and meet up with Johanna.
* Jessilina enters the Neighborly Town Pokémon Contest and wins, earning her fourth Ribbon.
* perfects a new combination move, which she calls Ice Chandelier.
* Dawn receives a new outfit for the Grand Festival from her mother.
Keeping in Top Forme! 	
* and meet Marley.
Pokémon Ranger: Heatran Rescue! 	
* and meet , a .
An Elite Coverup! 	
* and meet Sinnoh Elite Four member Bertha.
* Ash has a against Bertha, but loses.
Dawn of a Royal Day! 	
* and arrive in Arrowroot Town and meet Princess Salvia, a doppelgänger of .
* Dawn and Salvia decide to switch places for a day, with Salvia entering into the Arrowroot .
* Jessilina enters the Arrowroot Contest as well, but loses to Salvia in the finals.
* Jessilina receives the Arrowroot Ribbon from Salvia, thus becoming eligible to enter the Sinnoh Grand Festival.
* Dawn receives a as a from Salvia.
Dealing with a Fierce Double Ditto Drama! 	
* and arrive at Valor Lakefront for the Sinnoh Grand Festival.
Last Call, First Round! 	
* enters the Sinnoh Grand Festival alongside Zoey and Jessilina.
* Nando, , and Ursula are revealed to have earned their fifth Ribbons and enter the Grand Festival as well.
* Nando is revealed to have earned six more Gym Badges and to have obtained a and an .
* Zoey's is revealed to have evolved into a while her is revealed to have evolved into a .
* Kenny is revealed to have obtained a and his is revealed to have evolved into an .
* Ursula is revealed to have obtained two , which she evolves into a and a during her appeal.
* Dawn, Nando, Ursula, Zoey, and Jessilina successfully clear the Performance Stage.
* Kenny fails to make it through to the Battle Stage and is eliminated from the Grand Festival.
Opposites Interact! 	
* defeats Ursula and advances to the of the Sinnoh Grand Festival.
* Zoey, Nando, and Jessilina also advance to the eighth-finals of the Sinnoh Grand Festival.
Coming Full Festival Circle! 	
* , Zoey, Nando, and Jessilina advance to the semifinals of the Sinnoh Grand Festival.
* Zoey's is revealed to have evolved into a .
* Nando is revealed to have obtained a and his is revealed to have evolved into a .
* Zoey and Dawn defeat Nando and Jessilina, respectively, and advance to the finals of the Sinnoh Grand Festival.
A Grand Fight for Winning! 	
* Zoey's is revealed to have evolved into a .
* Zoey defeats in the final round of the Sinnoh Grand Festival.
* Zoey receives the Ribbon Cup and the title of Top Coordinator.
* Jessie abandons her career as a Pokémon Coordinator.
* learns that the Sunyshore Gym is fully repaired and Volkner is ready for their Gym .
The Eighth Wonder of the Sinnoh World! 	
* returns to Sunyshore City for his rematch against Volkner.
* Ash's Infernape activates his Ability again, and he gains control of it for the first time.
* Ash defeats Volkner and earns the , allowing him to participate in the Sinnoh League.
* Ash learns that the Sinnoh League will take place on Lily of the Valley Island in one month.
Four Roads Diverged in a Pokémon Port! 	
* and meet up with and encounter Jasmine.
* meets Jasmine for the first time.
* Ash battles Kenny and loses.
* Flint reveals that he will battle for the title of Sinnoh League .
* Ash and his friends head to Lily of the Valley Island.
Bucking the Treasure Trend! 	
* and meet Buck.
* Buck catches a .
An Old Family Blend! 	
* and arrive at Lily of the Valley Island for the Lily of the Valley Conference.
* Paul, , Nando, and Conway also enter the Lily of the Valley Conference, having earned the eight Gym Badges required.
* Ash decides to use the Pokémon he has stored at 's Laboratory, alongside the Pokémon he has acquired in Sinnoh, during the tournament, and subsequently spends time with several of them.
* Ash's is revealed to have learned , evolves into , and learns .
* The Lily of the Valley Conference begins.
* Ash learns he will be battling Nando in the first round of the tournament.
League Unleashed! 	
* Nando is revealed to have obtained an .
* Ash's Quilava is revealed to have learned .
* Ash's Heracross is revealed to have learned and .
* defeats Nando in the first round, advancing to the second round.
* , Conway, , and Paul also make it through the first round.
* Ash learns that has entered the tournament with a .
Casting a Paul on Barry! 	
* wins his second round , advancing to the third round.
* Paul, , Conway, and are revealed to have also advanced to the third round.
* Ash and Paul are selected to battle Conway and Barry, respectively, in the third round.
* Paul's is revealed to have evolved into an .
* The mysterious is revealed to be named Tobias.
* Barry is revealed to own a and a .
* Paul defeats Barry and advances to the .
Working on a Right Move! 	
* Ash's Infernape learns .
* Conway is revealed to have obtained a , a , and a .
* Ash's Noctowl is revealed to have learned , , and .
* Ash's Gible masters .
* defeats Conway and advances to the quarterfinals.
* advances to the quarterfinals as well.
* Ash learns that he will face Paul in the quarterfinals.
* Ash's Gliscor returns to Ash for the battle against Paul.
Familiarity Breeds Strategy! 	
* and Paul begin their Full Battle in the quarterfinals.
* Paul is revealed to have obtained a and a , while his is revealed to have evolved into an .
A Real Rival Rouser! 	
* and Paul continue their Full Battle.
* Paul is revealed to still own the he had shortly before catching , and to have obtained a .
* Ash's Gliscor is revealed to have learned .
Battling a Thaw in Relations! 	
* The Full Battle between and Paul ends in Ash's victory, resulting in Ash's first victory over Paul in a traditional Pokémon battle.
* Ash and Paul settle their differences and end their rivalry.
* Ash learns he will be battling in the semifinals.
* Paul announces his intention to head to Snowpoint City and re-challenge .
The Semi-Final Frontier! 	
* Ash's Heracross is revealed to have learned .
* Ash's Sceptile is revealed to have learned .
* is revealed to own a .
* battles Tobias in the semifinals and loses, placing Top 4.
* Tobias defeats his opponent in the finals, thus winning the Lily of the Valley Conference.
* The Lily of the Valley Conference ends.
The Brockster Is In! 	
* 's evolves into and learns .
* Nurse Joy suggests to Brock that he train to become a .
* and reach Twinleaf Town.
Memories are Made of Bliss! 	
* decides to remain in the Sinnoh region.
* and Dawn reaffirm their desires to become Pokémon Master and Top Coordinator, respectively.
* decides to study to become a .
* is introduced to Matori, 's secretary.
* Jessie, James, and are promoted.
* Flint battles for the title of Pokémon Champion and loses.
* Ash and Brock return to Kanto and go their separate ways.
* Ash and reach Pallet Town.
DPS01 	
* 's evolves into and learns .
* Dawn decides to leave Sinnoh with all of and compete in Pokémon Contests in Hoenn.
DPS02 	
* Forrest is revealed to own a .
* Forrest is officially made the Pewter City Gym Leader.
==Related articles==
* Timeline of events in Pokémon the Series
** The Beginning
** Gold and Silver
** Ruby and Sapphire
** Black & White
** XY
** Sun & Moon
** Journeys
* Timeline of events in Pokémon Horizons: The Series
Category:Pokémon animated series
Category:Lists