>>1994
>Though this does make me wonder what holidays exist in the Sonic universe.
SA2 had the holiday costumes and a few other things added to the game during holidays, sonic channel celebrates Christmas and such, and Sonic the screensaver had plenty of holiday artwork.
I've narrowed it down to Christmas/eve, Halloween, New year's/eve, 4th of July, Thanksgiving, Easter, Valentine's day/White day, & maybe Sonic's birthday since he is a world renowned hero.
(The Twitter account celebrates smaller holidays like mother's day, woman appreciation day, and etc. Though I doubt these are canon)