The milestones (from the source code):

//<10 seconds
'A single frame of a film': 100ms,
'It would take light to go around the Earth': 133ms,
'A blink of an eye': 400ms,
'The time it takes light to reach Earth from the moon': 1255ms,
'The fastest Formula 1 pit stop': 1820ms,
'The fastest 1/4 mile drag race time': 3580ms,
'The fastest Rubik\'s cube solve': 4221ms,
'The fastest 40-yard time at the NFL Combine': 4240ms,
'The fastest 1 liter beer chug': 4370ms,
'A skippable Youtube ad': 5000ms,
'A full bull ride': 8000ms,
'The fastest 100m sprint': 9580ms,

//10 Seconds
'The Wright Brothers first flight': 12000ms,
'The fastest 200m sprint': 19190ms,
'The fastest 50m freestyle swim lap': 21300ms,
'The Westminster Kennel Club dog agility record': 28440ms,
'A typical television ad': 30000ms,
'The fastest NASCAR lap at Daytona': 40364ms,
'The fastest 400m sprint': 43030ms,
'The fastest NASCAR lap at Talladega': 44270ms,
'The fastest 100m freestyle swim lap': 47050ms,

//1 Minute
'"Just a minute"': 60000ms,
'The fastest Formula 1 lap at Monaco': 74260ms,
'The fastest Formula 1 lap at Monza': 81046ms,
'The fastest 800m sprint': 100910ms,
'The fastest 200m freestyle swim lap': 102960ms,
'The fastest Kentucky Derby time': 119400ms,
'An NHL penalty box time for slashing, tripping, or holding': 120000ms,
'How long it takes to drive across the Golden Gate Bridge (without traffic)': 135000ms,
'The duration of the "Millenium Force" roller coaster': 140000ms,
'The longest Super Bowl national anthem': 156000ms,
'One round of a boxing match': 180000ms,
'The average song length on Spotify': 183000ms,
'The fastest 1,500m run': 206000ms,
'The song "Never Gonna Give You Up" by Rick Astley': 215000ms,
'The fastest 400m freestyle swim lap': 220140ms,
'The fastest 1 mile run': 223130ms,
'The duration of the "Steel Dragon" roller coaster': 240000ms,
'The duration of "The Beast" roller coaster': 250000ms,
'The song "4:33" by John Cage': 273000ms,
'The longest sky diving freefall': 276000ms,
'The Any% speedrun of Super Mario Bros for NES': 294948ms,

//5 Minutes
'An NHL penalty box time for fighting': 300000ms,
'The average duration of a typical sky dive': 330000ms,
'The average time for a drive-thru order': 356800ms,
'The time it takes Jeff Bezos to make $1 million': 402000ms,
'The fastest race car lap around the Nurburgring': 403300ms,
'The time it takes light to reach Earth from the sun': 500000ms,
'The time it takes a rocket ship to reach outer space': 510000ms,
'A typical marching band show': 515000ms,

//10 Minutes
'The length of the first space walk': 600000ms,
'The longest a human has held their breath (non-oxygen assisted)': 695000ms,
'The average duration of popular Youtube videos': 702000ms,
'The time it takes an average human to walk 1km': 710000ms,
'The fastest 5K run': 757350ms,
'The average time to bake a pizza': 810000ms,
'1% of the entire day': 864000ms,

//15 Minutes
'A typical commute in the United States': 960000ms,
'The fastest superbike lap of the Isle of Man TT': 1002778ms,
"MLK's \"I Have A Dream\" Speech": 1020000ms,
'An average baseball inning': 1200000ms,
'The song "2112" by Rush': 1233000ms,
'The first angels to appear in the movie "Angels in the Outfield" (1994)': 1275000ms,
'An episode of The Office, Seinfeld, or Rick &amp; Morty': 1320000ms,
'The time it takes to drive the entire Chesapeake Bay Bridge Tunnel': 1380000ms,
'The song "Octavarium" by Dream Theater': 1440000ms,
'A typical Super Bowl halftime show': 1500000ms,
'The fastest 10K run': 1584000ms,
'It takes for Bobby Boucher to get his first game snap in the movie "The Waterboy" (1998)': 1719000ms,

//30 Minutes
'The average time to bake a cake': 1950000ms,
'The time it takes until the launch in the movie Apollo 13 (1995)': 2081000ms,
'It takes WALL-E to arrive at the Axiom in the movie "WALL-E" (2008)': 2164000ms,
'The shortest war in history (Anglo-Zanzibar War)': 2280000ms,
'It takes Harry Potter to arrive at Hogwarts in "Harry Potter and the Sorcerer\'s Stone" (2001)': 2381000ms,
'The album "Thriller" by Michael Jackson': 2539000ms,
'The album "Dark Side of the Moon" by Pink Floyd': 2589000ms,
'An episode of Breaking Bad, House, or Firefly': 2640000ms,
'The boot camp sequence in the movie "Full Metal Jacket" (1987)': 2730000ms,
'The album "Abbey Road" by The Beatles': 2823000ms,
'It takes Simba to become an adult in the movie "The Lion King" (1994)': 2849000ms,
'10% of a typical work day in the United States': 2880000ms,
'The album "Kid A" by Radiohead': 2996000ms,
'The time limit for the essay portion of the SATs': 3000000ms,
'The time it takes a standard ice cube to melt at room temperature': 3150000ms,
'0.01% of an entire year': 3155692ms,
'The album "Fearless" by Taylor Swift': 3221000ms,
'The time it takes for the basketball game to start in the movie "Space Jam"': 3222000ms,
'An episode of Game of Thrones, True Detective, or The Sopranos': 3300000ms,
'It takes Harry and Lloyd arrive in Aspen in the movie "Dumb and Dumber" (1994)': 3394000ms,
'The album "Jagged Little Pill" by Alanis Morissette': 3443000ms,
'The fastest half-marathon': 3451000ms,

//1 Hour
'An episode of Top Gear': 3600000ms,
'The inception of Robert Fischer begins in the movie "Inception" (2010)': 3847000ms,
'Riding the longest subway line in NYC from Queens to Inwood': 3900000ms,
'The time it takes Jeff Bezos to make $10 million': 4017600ms,
'It takes before Sean Connery says "Welcome to the Rock" in the movie "The Rock" (1996)': 4022000ms,
'A flight from Syracuse to New York City': 4140000ms,
'5% of the entire day': 4320000ms,
'The album "Goodbye Yellow Brick Road" by Elton John': 4580000ms,
'The album "Scenes From A Memory" by Dream Theater': 4626000ms,
'The movie "Primer" (2004)': 4740000ms,
'It takes to fully charge a Tesla (at 440V)': 4788000ms,
'The ferry duration from Long Island, NY to New London, CT': 4800000ms,
'The movie "Toy Story" (1995)': 4860000ms,
'A drive from Syracuse, NY to Rochester, NY (87.5 miles)': 4920000ms,
'The movie "The Lion King" (1994)': 5280000ms,
'The longest State of the Union address': 5280000, //Duplicate time...

//1.5 Hours
'The movie "Mony Python and the Holy Grail" (1975)': 5460000ms,
'The movie "Monsters, Inc." (2001)': 5520000ms,
'An average duration of a soccer game': 5700000ms,
'The movie "Reservoir Dogs" (1992)': 5940000ms,
'The longest Innaugural address': 6300000ms,
'A drive from Orlando, FL to Tampa, FL (84.6 miles)': 6660000ms,
'An SR-71 flight from New York City to London': 6896400ms,
'The movie "Alien" (1979)': 7020000ms,

//2 Hours
//'25% of a typical work day in the United States': 7200000ms,
'The average duration of an NCAA basketball game': 7200000ms,
'The movie "Star Wars: A New Hope" (1977)': 7260000ms,
'The fastest marathon time ever ran': 7299000ms,
'The time it takes to listen to every studio album by Nirvana': 7667000ms,
'The movie "Dogma" (1999)': 7680000ms,
'The average duration of an NBA basketball game': 7860000ms,
'The movie "The Matrix" (1999)': 8160000ms,
'The movie "Fight Club" (1999)': 8340000ms,
'The movie "The Shawshank Redemption" (1994)': 8520000ms,
'The movie "Forrest Gump" (1994)': 8520000ms,
'A drive from New York City to Philadelphia (94.6 miles)': 8520000ms,
'10% of the entire day': 8640000ms,
'The movie "Inception" (2010)': 8880000ms,
'The movie "Avengers: Infinity War" (2018)': 8940000ms,
'The movie "Pulp Fiction" (1994)': 9240000ms,
'It takes Voyager 1 to travel 100,000 miles': 9360000ms,
'The movie "Avatar" (2009)': 9720000ms,
'The average duration of an NHL hockey game': 9750000ms,
'The movie "Saving Private Ryan" (1998)': 10140000ms,
'The movie "The Godfather" (1972)': 10500000ms,
'The movie "Lord of the Rings: The Fellowship of the Ring" (2001)': 10680000ms,

//3 Hours
'The average duration of an NFL football game': 10800000ms,
'The total time limit of the SATs': 10800000ms,
'The movie "Avengers: Endgame" (2019)': 10860000ms,
'The average duration of an MLB baseball game': 11280000ms,
'The time it takes for a standard ice cube to freeze in a freezer': 11700000ms,
'The movie "Titanic" (1997)': 12600000ms,
'A drive from Boston to New York City (215.9 miles)': 13560000ms,
'Alex Honnold\'s free solo climb of El Capitan': 14160000ms,

//4 Hours
'Half of a typical work day in the United States': 14400000ms,
'The flight time from New York City to Los Angeles': 19800000ms,
'The time limit of one session of the Bar exam': 21600000ms,
'It takes Voyager 1 to travel 250,000 miles': 23400000ms,
'The fastest swimmer to cross the English Channel': 24900000ms,

//>8 Hours
'A full typical work day in the United States': 28800000ms,
'0.1% of an entire year': 31536000ms,
'The time it takes Jeff Bezos to make $100 million': 40173000ms,
'The time it takes to assemble a car': 57600000ms,
'1% of an entire year': 315360000ms,
'It takes for the Lōʻihi volcano to rise above the surface of the ocean becoming a new Hawaiian island': Number.MAX_SAFE_INTEGER //285,616 years