Published on March 11, 2025 1:30 AM GMT

Summary

As some of you may already know, it's been ten years since Harry Potter and the Method of Rationality concluded and wrap parties were held around the world. I've taken the baton of coordinating parties from Habryka, and now over 20 parties on 3 continents are going to happen. Now's the time to spread the word and get as much attendance as possible. If you've been with us for ten years, look back at the last decade and celebrate how far the Methods have carried us. If you're new, then come and be welcome, and know that you're not the only one. This post will serve as a central location for information and resources available for the parties, as well as a place for discussion in the comments.

Parties

Parties in Australia

Sydney, NSW, Australia

Contact: Eliot
Contact Info: redeliot[a t]gmail[dot]com
Time: Saturday, March 15th, 02:00 PM
Location: 14 Frances St, Randwick at the upstairs hall at the back building (enter in through the carpark area to the side gate and then walk down the path to the back building)
Coordinates: https://plus.codes/4RRH36QQ+QRW
Group Link: https://www.meetup.com/rationalists_of_sydney/
Additional Notes: Please RSVP so we can predict numbers

Gold Coast, QLD, Australia

Contact: Jasmine Bacon
Contact Info: Veggiesbacon[at]gmail[d ot]com
Time: Friday, March 14th, 06:00 PM
Location: Burleigh (I’ll email anyone coming the exact address if it ends up being enough people)
Coordinates: See above
Group Link: I’ve just got my email for contact
Additional Notes: Please RSVP and I’ll send address! Feel free to bring friends/kids just let me know. Thank you!

Parties in Europe

Moscow, Moscow, Russia

Contact: Monoid
Contact Info: contact[at]monoid[do t]ru
Time: Saturday, March 15th, 04:00 PM
Location: The meetup will be in Moscow. The exact location will be announced in the participants' chat as the date approaches.
Coordinates: https://plus.codes/9G7VMGVH+QV
Group Link: https://t.me/monoid_center
Additional Notes: Please RSVP in advance to get the exact location. The registration form is on our website (http://monoid.ru/hpmor-10y)

NRNU MEPhI, Moscow, Russia

Contact: Ender
Contact Info: freelancehunter146[a t]gmail[dot]com
Time: Saturday, March 15th, 04:30 PM
Location: We'll be in the Canteen Blue on campus or somewhere near in case it is taken. In any case, I'll notify about the exact location, and will be wearing the unique badge on red ribbon.
Coordinates: https://plus.codes/9G7VMM28+36
Group Link: <only obtained from local community, not vice versa>
Additional Notes: ONLY for students of Moscow Engineering Physics Institute.

Arkhangelsk, Russia

Contact: Mikhail
Contact Info: prynkov[at]gmail[d ot]com
Time: Sunday, March 16th, 12:00 PM
Location: Psychological Club "The Room": Arkhangelsk, Troitskiy Av., 39, office 33
Coordinates: https://plus.codes/9HP2GGPC+35
Group Link: https://vk.com/mprynkov
Additional Notes: Please pre-register via group messages

Paris, Île-de-France, France

Contact: Camille Berger
Contact Info: camille[do t]berger[a t]psl[dot]eu
Time: Friday, March 14th, 6:00 PM
Location: (Use the Partiful link!)

Hamburg, Germany

Contact: Hauke
Contact Info: hpmore[dot]docs[do t]google[dot]com[ at]haukerehfeld[dot]de
Time: Friday, March 14th, 05:00 PM
Location: Hamburg, DE. Details see post once we decided
Coordinates: lat,lon
Additional Notes: RSVP on the post!

London, UK

Contact: Richard
Contact Info: richardtkemp[at]gmail[do t]com
Time: Saturday, March 15th, 06:00 PM
Location: Downstairs (the hall), Newspeak house, 133 Bethnall green road
Coordinates: https://plus.codes/9C3XGWGH+3F6
Group Link: https://chat.whatsapp.com/K54tAk9YyFPKJWAJQt7iTK
Additional Notes: (FYI co-organising with Phil Hazelden)

Parties in North America

Brandon, Manitoba, Canada

Contact: Stephen
Contact Info: https://signal[dot]me/#eu/xHiKm2lYDpAaSTUFJ1I-Nssb6bvUJxbSx4xGWT3Qg65xTFM4zF5E1LPnmmeHzM56
Time: Saturday, March 15th, 03:00 PM
Location: Chez Angela
Coordinates: https://plus.codes/86X2R2XX+GF

Kitchener-Waterloo, ON, Canada

Contact: Jenn
Contact Info: jenn[a t]kwrationality[d ot]ca
Time: Thursday, March 13th, 07:00 PM
Location: Waterloo Public Library Main Branch - Board Room on the first floor. 35 Albert St, Waterloo, ON N2L 5E2
Coordinates: https://plus.codes/86MXFF8G+93Q
Group Link: https://kwrationality.ca/
Additional Notes: Regular turnout for events is 8-12 people

Ottawa, ON, Canada

Contact: Tess
Contact Info: rationalottawa[ at]gmail[dot]com
Time: Friday, March 14th, 07:00 PM
Location: Tess' House, 307 Southcrest Pvt, Ottawa
Coordinates: https://plus.codes/87Q698CM+2H
Group Link: https://discord.gg/NCxGNU5a9z
Additional Notes: Join Rational Ottawa for takeout (to be provided) and butterbeer if you partake- and don't be shy about dressing up if you'd like- private gathering has its perks!

Berkeley, CA, USA

Contact: Skyler
Contact Info: skyler[at]rationalitymeetups[d ot]org
Time: Sunday, March 16th, 05:00 PM
Location: 2740 Telegraph Ave: Use the Stuart Street Entrance
Coordinates: https://plus.codes/849VVP5R+X5
Additional Notes: Children welcome, no pets please.

Denver, CO, USA

Contact: Steven Zuber
Contact Info: stevenjzuber[at]gmail[d ot]com
Time: Friday, March 14th, 07:00 PM
Location: We'll be in the back room of Darcy's Pub.
Coordinates: https://plus.codes/85FQJ4G3+RR
Group Link: https://www.lesswrong.com/groups/oa7zHKuy5jdJQ9HAB
Additional Notes: Please RSVP so I can confirm the number of attendees with the restaurant.

Boston, MA, USA

Contact: Skyler
Contact Info: Skyler[at]rationalitymeetups[d ot]org
Time: Saturday, March 15th, 12:00 PM
Location: Sennott Park, 305 Broadway, Cambridge. Backup is 199 Harvard Street
Coordinates: https://plus.codes/87JC9W92+92
Group Link: https://groups.google.com/g/boston-lw
Additional Notes: Kids welcome!

Rockville, MD, USA (Washington DC)

Contact: Maia
Contact Info: mwerbos[a t]gmail[dot]com
Time: , 06:00 PM
Location: Private home. Please message for the address
Coordinates: https://plus.codes/87F43RMW+MR
Group Link: https://www.lesswrong.com/groups/62wo78PzzH6yjnZyu
Additional Notes: Message for the address

Kansas City, MO, USA

Contact: Alex
Contact Info: alex[dot]hedtke[a t]gmail[dot]com
Time: Friday, March 14th, 06:00 AM
Location: The Fix KC (600 E 31st St, Kansas City, MO 64109) - I will have a table sign
Coordinates: https://plus.codes/86F73CCC+9X8
Group Link: https://www.meetup.com/kc_rat_ea
Additional Notes: Please RSVP so I know how many to expect.

Princeton, NJ, USA

Contact: ?UnlimitedOranges?
Contact Info: elvisQwalsh[a t]gmail[dot]com
Time: Friday, March 14th, 06:00 PM
Location: Prince Tea House - 4437 Route 27 Princeton, NJ 08540. The tea house is next to Sushi Palace. We should be easy to spot and I'll have a black witch's hat just in case.
Coordinates: https://plus.codes/87G799MX+4V
Group Link: https://www.lesswrong.com/events/uMydbhsABGzQZ3Hjd/new-jersey-hpmor-10-year-anniversary-party
Additional Notes: RSVPs aren't required, but appreciated so I can let the tea house know what to expect. Costumes recommended but not required.

Dayton, OH, USA

Contact: Kevin, LunaWarrior
Contact Info: Lesswrong[do t]dayton[at]gmail[d ot]com
Time: Saturday, March 15th, 03:00 PM
Location: 10 E Main Street, Fairborn 45324
Coordinates: https://plus.codes/86FQRXCH+GQF
Additional Notes: Pizza will be provided

Austin, TX, USA

Contact: Silas Barta
Contact Info: sbarta[at]gmail[do t]com
Time: Saturday, March 15th, 01:30 PM
Location: Central Market, 4001 N. Lamar, Austin, Texas; We'll have an Austin LessWrong sign
Coordinates: https://plus.codes/86248746+R2
Group Link: https://groups.google.com/g/austin-less-wrong/
Additional Notes: We are running this event as a regular Austin LessWrong/SSC/ACX meetup, but HPMoR-themed this time.

Salt Lake City, UT, USA

Contact: Adam
Contact Info: adamisom[at]hey[d ot]com
Time: Saturday, March 15th, 07:00 PM
Location: 1130 E 2700 S #K83 Salt Lake City, UT (building K is the north-west most, near 1100 E)
Coordinates: https://plus.codes/85GCP46R+XG
Group Link: please email me (adamisom[ at] hey[do t] com) for a Discord link!

Seattle, WA, USA

Contact: Robert Cousineau
Contact Info: cousineaur[a t]gmail[ dot]com
Time: Friday, March 14th, 06:00 PM
Location: Graduate Hotel Lobby
Coordinates: https://plus.codes/84VVMM6P+J6C
Group Link: https://discord.gg/JshSyZsK

Parties that are online

VRCHAT

Contact: Daniel
Contact Info: daniel[dot]l[d ot]carrier[at]gmail[dot]com
Time: Saturday, March 15th, 03:00 PM
Location: VRChat in the LessWrong and AC10 Meetup group
Coordinates: LESSWR.7138
Group Link: https://discord.gg/ADQAHkcWE6
Additional Notes: VRChat is free, and doesn't require VR.

If you're reading this and you want to add a party, the easiest way is to fill out this form for new parties. If you comment on this post or send me a message, I can also try and add you, but the form is the easiest way to make sure I have the details I need- but other people will be reading the comments here, so feel free to post a link to your party so people can see it right away!

Resources

Handbook

Not sure what to do at your party? I have an Anniversary Guide here I've put together with suggestions.

Fan works

In the ten years since HPMOR was published, fan work is still being created. I have a collection of such works in this document, and the document is set up so anyone can edit it and add more. Recommend your favourites! The main rule is, nothing that was published before 2016!

The Party Spreadsheet

For easy of viewing, I've compiled a spreadsheet of all the parties I know of. Commenting is enabled, so if you're the organizer and want something changed just leave a comment on the sheet and I'll update it as fast as reasonably possible. If you want to add a new party, the form is linked in the sheet!

Call for Stories

I have described HPMOR as a life-changingly good piece of fanfiction. While I am an outlier, I think it's been impactful for a lot of people. If you want, you can write your own story in this document to share it with the world. I'd like to encourage sharing your thoughts or feelings on HPMOR, whether it was a large impact like changing jobs and continents or a small impact like having a fun story to tell classmates about.

Rationality Meetups Discord:

There exists a Rationality Meetups discord, used by organizers for such events around the world. You can ask people for advice on running your meetup, ask if there's a regular meetup group near you, or just say hello. While not originally set up for HPMOR parties, I think those fall squarely under the heading of a rationalist meetup!

I will continue keeping this post updated with all the useful material that I come across.

Discuss