·noun ·pl Records or registers of important events.
II. Fasti ·noun ·pl The Roman calendar, which gave the days for festivals, courts, ·etc., corresponding to a modern almanac.
fasti, ōrum, m., v. 1. fastus. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
fāstī ōrum (accpl. fastūs, H.), m fastus, sc. dies, a register of judicial days, court calendar (o...
An Elementary Latin Dictionary