Ok I know this is for headcanon only (this is my version) (My Little Pony: Friendship Is Magic and Equestria Girls characters birthdays)
- March 30th - Twilight Sparkle
- May 3rd - Pinkie Pie (Source: confirmed by The Hub Network (now Discovery Family) via their social media channels, and it was also consistent with an in-show line of dialogue.
- April 14th - Rainbow Dash
- March 16th - Fluttershy
- August 17th - Rarity
- October 19th - Applejack
- May 1st - Spike
- December 20th - Starlight Glimmer
- August 31st - Trixie Lulamoon
- July 15th - Derpy
- September 1st - Lyra Heartsrings
- June 18th - Sweetie Drops/Bon Bon
- February 2nd - DJ Pon3/Vinyl Scratch
- November 21st - Octavia Melody
- July 10th - Apple Bloom
- June 9th - Sweetie Belle
- December 1st - Scootaloo
- August 15th - Big McIntosh/Big Mac
- January 14th - Shining Armor
- May 18th - Discord
- September 30th - Diamond Tiara
- August 2nd - Silver Spoon
- July 17th - Snails
- December 7th - Snips
- September 12th - Ember
- October 25th - Fleur De Lis
- June 26th - Suri Polomare
- March 3rd - Photo Finish
- November 1st - Amethyst Star
- August 26th - Roseluck
- July 20th - Trenderhoof
- June 4th - Jet Set
- July 8th - Upper Crust
- September 6th - Bulk Biceps
- April 29th - Neon Lights
- November 15th - Royal Pin