It's the deadline for submitting talks to PyCon US 2025 this evening (about 3.5 hours from now) https://www.timeanddate.com/worldclock/fixedtime.html?msg=PyCon+US+2025+Call+for+Proposals+Deadline&iso=20241219T2359&p1=418
Details here: https://us.pycon.org/2025/speaking/guidelines/
(I ended up making my own little word counter thing (via Claude) to help me fit my proposal in the 300 word recommended limit https://tools.simonwillison.net/word-counter )