Here are mine:
3. Know holidays*
*I do not know what month Easter is in. Thanksgiving is sometime in November. Valentine's day is February 16th? 17th? 19th? Sometime around then. I only just got Christmas under my belt (I knew it was either the 24th, 25th, or 26th). July 4th is a fucking godsend, and Labor Day/Columbus Day/President's Day seem to pop up completely randomly and are always a welcome surprise.