So I need a list of the various annual events and important dates that take place throughout the Eorzean year. Note: annual - I only want events that take place every year. Also preferably in handy note format, so I can conveniently pin them to specific cells in my Eorzean calendar spreadsheet.

I know that the game is very vague about when the various festivals take place, so I'm fine with rough estimates of when exactly they take place, time-bubble notwithstanding. I'd like citations of which month or season, if not which day, a festival takes place, and I'd also like a list of the more obscure events, such as that Third Astral/Umbral Moon feast that I vaguely recall reading in a levequest.