Crossword puzzle clue "they used a calendar called xiuhpohualli"

They used a calendar called Xiuhpohualli

Like the calendar stone called the Sun Stone

Calendar that cycles 60 years called Samvatsaras

Calendar used for nearly two millennia

Calendar used at St. Patrick's

They're made after they've been used

"The ___ and Alize keep me pissy / Girls used to diss me / Now they write letters 'cause they miss me" (Notorious B.I.G. lyric name-checking his fancy champagne diet)

Letters the Bluths put on the invitation to a fundraiser they couldn't think of a good cause for, which eventually became the fake disease they used to pocket all the donation money, on "Arrested Deve