Petrov Day is a recurring event in the Astral Codex Ten archive, appearing 4 times across 4 issues between July 01, 2022 and August 29, 2025. The archive places it in contexts such as "I have been celebrating Petrov Day with readings and quotes"; "Petrov Day, Smallpox Eradication Day, and others have managed to sort of catch on"; "Less Wrong’s Petrov Day celebration". It most often appears alongside Ukraine, France, Russia.
- Article page
- Petrov Day
- Mention count
- 4
- Issue count
- 4
- First seen
- July 01, 2022
- Last seen
- August 29, 2025
- http://petrovday.com
- http://web.archive.org/web/20221104130431/https://stevekirsch.substack.com/p/1m-bet-rules
- http://web.archive.org/web/20221129133112/https://blog.rootclaim.com/rootclaim-accepts-500000-challenge-on-covid-vaccine-safety-efficacy/
- http://web.archive.org/web/20221224061743/https://www.skirsch.com/covid/SaarWilf.pdf
- https://archive.ph/pY4gF#selection-663.103-683.190
- https://web.archive.org/web/20230104080248/https://www.rootclaim.com/
- https://www.nytimes.com/2020/12/27/business/media/heather-cox-richardson-substack-boston-college.html
The last few years I have been celebrating Petrov Day with readings and quotes from people who changed the world. This year I’m likely going to add some recognition of Hersch Lauterpacht, Salmon Levinson, James Shotwell and the others who brought about an end to the normalcy of war.
Maybe Pride Month is the clearest example of this working in the modern era, from back when gays were more persecuted and before it was endorsed by cities and corporations? The rationalists have also succeeded at this within their subcommunity in a smaller way - Petrov Day, Smallpox Eradication Day, and others have managed to sort of catch on, with maybe a few hundred people celebrating them yearly. Maybe this suggests that small tight-knit groups (gays were a small tight-knit group whenever Pride started) can still do this, and then sometimes they catch on? Maybe this is the only way organic holidays ever form?
1: Less Wrong’s Petrov Day celebration caused prediction-market-related drama.
Contact: Gavin Contact Info: bisga673[a t]student[period]otago[period]ac[period]nz Time: Friday, September 26th, 5:30 PM Location: WEA Canterbury Workers' Educational Association - don't have details about the exact entrance right now but it will be obvious and if you are unsure, email me sometime beforehand Coordinates: https://plus.codes/4V8JFJCJ+5M Group Link: EA group link (same organiser): https://www.facebook.com/groups/EAChristchurch Notes: We'll have a pot luck, and later in the evening a Petrov Day celebration. I'm a big reader of ACX and would love to connect with similar people (and connect you with some Chch EA people if you're interested). Note we've got the biggest ever NZ EA event (EA Summit) happening the next day and you're welcome to come to that too! https://www.facebook.com/share/1Aw5PaF7ms/ More info at that link. Please RSVP on facebook if you can't bring food. (Please RSVP anyway but don't let it stop you from coming)