Question: Elena and the Secret of Avalor was a crossover containing a series that premiered on Disney Channel on what date in 2016?
Context: Twitches Too is a 2007 Disney Channel Original Movie.  It is the sequel to the Disney Channel Original Movie "Twitches", released in 2005.  The film began production in late April 2007 and was released on October 12.  It aired during "Disney Channel's Halloween Month".  The Disney Channel Original Series, "Wizards of Waverly Place", premiered following the film's premiere.  The first trailer was released during the premiere of "High School Musical 2".  On its premiere night, the movie brought in 6.96 million viewers.  To date, it is the last sequel to a Disney Channel Original Movie that is not a musical. Cory in the House is a television show, which aired on the Disney Channel from January 12, 2007, to September 12, 2008, and was a spin-off from the Disney show "That's So Raven".  The show focuses on Cory Baxter, who moves from San Francisco, California to Washington, D.C. with his father, after Victor Baxter gets a new job in the White House as the official head chef.  The series marks a Disney Channel first, as it is the channel's first spin-off.  This is also the only Disney Channel spin-off series to be broadcast in standard definition for the entire length of the show.  Reruns of the series have not been produced on Disney Channel, or on Disney XD; however they continue to air on the Family channel in Canada.  Raven-Symoné guest-starred, reprising her role as Raven Baxter in one episode.  In 2014 Disney Channel started airing a weekly block called "Disney Replay" on Wednesdays nights, during which episodes of "Cory in the House" air alongside "That's So Raven" and "Kim Possible", among others. North Star (Hebrew: כוכב הצפון‎ ‎ , also known as "Northern Star") is an Israeli teen drama series of The Walt Disney Company, which was produced by Herzliya Studios.  The series premiered on Disney Channel in Israel on 30 November 2014.  Disney Channel Israel gave the green light for the production of a final second season in February 2015, which was first shown on 6 March 2016.  In the series "North Star" also some actors from the Israeli Disney Channel Original Series "Summer Break Stories" appear as their characters.  The finale of "North Star" was broadcast on June 16, 2016 by Israeli Disney Channel. Flash Forward is a Disney Channel Original Series produced in Canada for preteens and teenagers which aired on both Disney Channel and ABC from 1995 to 1997.  The series first aired as a 4-episode limited-run preview on The Disney Channel from December 14, 1995 to January 6, 1996. <ref name="August/September 1996">"The Disney Channel Magazine", Vol.  14, no. 4, August/September 1996: p. 4. </ref> Starting on September 14, 1996, the series aired as a special nationwide preview-run on ABC's Saturday morning lineup. <ref name="December 1996/January 1997">"The Disney Channel Magazine", Vol.  14, no. 6, December 1996/January 1997: pp. 18, 23, 36, 39, 47. </ref> On January 1, 1997, the series joined The Disney Channel with a special New Year's Day 5-hour, 10-episode marathon, and on January 5, the series moved to its regular time slot on Saturdays and Sundays. Donald's Quack Attack is an American television series which ran on The Disney Channel and was later rerun on Toon Disney.  It premiered on November 2, 1992, along with "Mickey's Mouse Tracks", on The Disney Channel.  It featured Disney animated short films, especially those with Mickey Mouse, Donald Duck, and Goofy.  Each episode lasted about 22–28 minutes, leaving some time for commercials. .  A similar Mickey Mouse version was called "Mickey's Mouse Tracks", however, unlike "Mouse Tracks", "Quack Attack" was run with a manic energy.  In between the cartoon shorts, a screen would appear with a random background color (pink, blue, green, etc.) With a clip in the corner from a random Donald Duck cartoon.  There was a thermometer with Donald's head on the bottom.  When the clip showed Donald getting angry, the head on the thermometer would go up and make a dinging sound.  This was called the "Quack Attack Meter."  This 10-25 second clip would appear 2 to 4 times per show, depending on how long the shorts were.  The credits for the show did not name anyone.  Instead, it stated, "The cartoons in this program are the work of the animators from THE WALT DISNEY COMPANY over the past 60 years."  When the show premiered in 1992, it was meant to replace "Donald Duck Presents".  It was not possible to know what episode was going to be shown on any given day, but the show did feature showings of some shorts that do not show up on "The Ink and Paint Club" along with some shorts made by the "Fleischer" brothers, and clips from the animated features, such as "Snow White and the Seven Dwarfs", "Pinocchio", "Peter Pan", and "Lady and the Tramp".  "Donald's Quack Attack" aired on The Disney Channel from 1992 to 2000, and on Toon Disney from 1998 to December 2002.  From April 2001 to December 2002, "Quack Attack" usually aired weekdays at 5 a.m., and every night at midnight.  When "Quack Attack" aired on Toon Disney, there were short commercial breaks in between each cartoon, unlike the airings on The Disney Channel.  On some episodes, the first cartoon was cut from the episode to make room for commercial breaks. Elena of Avalor is an American computer-animated television series that premiered on Disney Channel on July 22, 2016.  The series is about a Latina princess and her family and takes place in the same universe as Disney Junior's "Sofia the First". Elena and the Secret of Avalor is an American computer-animated musical fantasy adventure crossover television movie between two Disney television series, Disney Junior's "Sofia the First" and Disney Channel's "Elena of Avalor", taking place before the latter series.  It is also the 21st episode of "Sofia the First" - Season 3 and the 74th episode in the series.  It premiered on November 20, 2016, on both Disney Channel and Disney Junior.  The Primetime special was directed and Executive Produced by Jamie Mitchell and Craig Gerber Executive Produced and wrote the screenplay.  The show was honored with a 2017 Emmy nomination for Outstanding Animated Show by the Television Academy.  "The Secret of Avalor" debuted on Disney Channel in the UK on December 3, 2016. Good Morning, Mickey!  is a television series that aired on The Disney Channel.  It was first aired on April 18, 1983, when The Disney Channel launched.  It was one of The Disney Channel's first original programs, and the first program aired at the channel's launch.  It featured classic Disney animated shorts.  Although Mickey Mouse shorts were the primary programming, additional cartoons featuring Goofy, Donald Duck, Chip 'n' Dale, Pluto, and others were also shown.  Its time-slot for its early run was at 7 a.m. Eastern/Pacific Time, making it the first program of The Disney Channel's 16 (later 18) hour programming day.  Later on, its time-slot was changed to 7:30 a.m. ET/PT, making it the second program of the channel's programming day.  A similar show that premiered later on The Disney Channel was "Donald Duck Presents".  "Good Morning, Mickey!"  was replaced by "Mickey's Mouse Tracks" in 1992. Jenna Marie Ortega (born September 27, 2002) is an American actress.  She is known for her roles in "Jane the Virgin" on The CW and "Stuck in the Middle" on Disney Channel.  She is also the voice of Princess Isabel in the Disney Channel animated television series "Elena of Avalor". Aimee Carrero (born July 15, 1988) is an American actress.  She is known for her role as Angie on the Cartoon Network live-action series "Level Up".  Since 2014, she has starred as Sofia Rodriguez on the Freeform sitcom "Young & Hungry", and provides the voice of Princess Elena on the Disney Channel animated series "Elena of Avalor".
Answer: July 22