with how the resets work in this game it can be very confusing and I truly think that ESO would benefit greatly with a set time and day for resets much like WoW.
Daily Quests reset at 11pm PDT, Enlightenment happens at around 9:30pm PDT I think, selling stolen items are around 7pm PDT.
Enlightenment is specifically the time that your first character originally hit level 50...different for everyone. For instance, I get my enlightenment at 11:56 am EDT.
But yeah, timers and resets through the game are kinda all over the place...