April 12th - Gagavision #42
April 19th - Judas Single Release
April 19th - Gagavision #43
April 26th - "Born This Way" Glee Episode
April 26th - Gagavision #44 April 29th - MTV OMAs
May 2nd - Gagavision #45
May 3rd - iTunes Countdown Single #1
May 6th - Americano Premiere @ The Monster Ball
May 7th - HBO Monster Ball
May 9th - Gagavision #46
May 9th - Robin Hood Gala
May 10th - iTunes Countdown Single #2
May 15th - Radio 1's Big Weekend (UK)
May 17th - iTunes Countdown Single #3
May 17th - International Metro Guest-editorial May 21st - SNL May 22nd - Billboard Music Awards
May 23rd - Born This Way Album Release May 25th - Heartbeats V2 Release
May 26th - American Idole Finale
May 27th - GMA Concert
June 14th - X Factor (France)
June 15th - Daybreak (UK)
June 19th - MMVAs (Canada)
June 25th - MTV Video Music Aid Japan
Still to come:
US - Ellen, V Magazine Columnist, OWN Visionary Special, Oprah
International - Le Grand Journal (France), JT France 2
Other - Album cover, tracklisting & Judas video
It's unclear as to when the American Idol finale is taking place.
It can be either - May 19, May 25 or May 26. We have to wait for Fox to announce the date, as finale week may be Tuesday & Wednesday rather than the current Wednesday & Thursday.
. What if she performs two weeks in a row? 
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Thank you 