- This page is for the day of the calendar year. For the song by the Rentals, see December Thirty One.
- 1994 - Rivers Cuomo writes "Let Me Wash At Your Sink."
- 2000 - Weezer plays a special New Year's Eve show at Cox Arena in San Diego with blink-182 and New Found Glory.
- 2002 - Rivers Cuomo writes and records "I Want to Take You Home Tonight."
- 2018 - Weezer performs live at Dick Clark's New Year's Rockin' Eve in New York City.