About r/100yearsago
In its own words:
This subreddit was formed in late 2013 to document World War I, day by day as it developed. It covers social, political, military and cultural developments in combatant countries and noncombatants alike. Its particular emphasis is on pointing out the most striking similarities and differences from the problems humanity faces today.
Community guide
At #441 with about 2.5 million subscribers, r/100yearsago is this subreddit was formed in late 2013 to document World War I, day by day as it developed. It covers social, political, military and cultural developments in combatant countries and noncombatants alike. Collected rules highlight Must be Content from 100 Years Ago; Start Submission Titles with the Date; and Follow Reddiquette, among 4 listed. Activity mix in sample: image:34, gallery:8, text:1, link:1. Moderate sample (~6.1 ppd across 44 posts).
Community focus
This subreddit was formed in late 2013 to document World War I, day by day as it developed. It covers social, political, military and cultural developments in combatant countries and noncombatants alike. Compared with adjacent topical subs, keep content inside this sub’s own boundaries.
Rules that shape posts
From the collected list: Must be Content from 100 Years Ago; Start Submission Titles with the Date; Follow Reddiquette; No Reposts. When a rule title is terse, assume the live wiki/sidebar has the detail.
Before you post
Check flair, spoiler, and self-promo norms. Moderate sample (~6.1 ppd across 44 posts). Submission setting notes: Submission type is open (text or link)..
SubMouse Editorial
The community was created on Aug 4, 2013, which makes it 13 years old. Since Oct 26, 2026, it has gained 214 subscribers (+0.01%). It sits just behind r/RealEstate (#440) and ahead of r/JuJutsuKaisen (#442) in our ranking.
What sets r/100yearsago apart
r/100yearsago is far more image-driven than most big subreddits: 77% of its recent posts are images, against a median of 19% across the Top 100. People mostly look and upvote here rather than comment — about 2.6 comments per post, against 13.6 for a typical large subreddit.
Subscriber growth
Between Sep 19, 2026 and Nov 2, 2026, r/100yearsago went up from 2,500,997 to 2,502,974 subscribers (+2K, +0.08%). That is about 45 new members per day. The chart uses our weekly snapshots (9 so far), so it gets longer every week.
What r/100yearsago talks about
We read the titles of 44 recent posts (Oct 29–Nov 4), the words that come up most are “november”, “october”, “inquiring”, “asks” and “reporter”. Other frequent themes are women, conference, born, shot, american and photographer. Recurring phrases include “october 29th”, “november 3rd”, “november 1st” and “november 4th”. By format, 77% are images, 18% are galleries and 2% are text posts.
Activity and best time to post
r/100yearsago gets about 6.1 new posts a day. The public archive holds 60,152 posts and 157,594 comments in total, about 2.6 comments per post. Last week the busiest day was Thursday (9 posts) and the quietest was Saturday (5). Posting peaks around 13:00 UTC and is lowest around 00:00 UTC.
Rules of r/100yearsago
The moderators of r/100yearsago list 4 rules. In short:
- Must be Content from 100 Years Ago
- Start Submission Titles with the Date
- Follow Reddiquette
- No Reposts
How to join
Open reddit.com/r/100yearsago and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How big is r/100yearsago?
r/100yearsago has 2,502,974 subscribers (Nov 2, 2026), which makes it the #441 safe-for-work subreddit in the SubMouse ranking. It added 1,977 members between Sep 19, 2026 and Nov 2, 2026.
When was r/100yearsago created?
r/100yearsago was created on Aug 4, 2013, so it has been around for 13 years.
Is r/100yearsago still active?
Yes. r/100yearsago gets about 6.1 new posts a day (average of the last four weeks). Over its lifetime the archive counts 60,152 posts and 157,594 comments.
What is the best time to post in r/100yearsago?
Based on post counts from Oct 29, 2026 to Nov 4, 2026, the busiest day was Thursday and the quietest Saturday, and most posts arrive around 13:00 UTC, with the fewest around 00:00 UTC. More posts also means more competition, so a quieter hour can help a post get noticed.
What kind of posts are on r/100yearsago?
The community describes itself as: “This subreddit was formed in late 2013 to document World War I, day by day as it developed. It covers social, political, military and cultural developments in combatant countries and noncombatants alike. Its particular …” Recent post titles often mention november, october, inquiring, asks and reporter. Most posts are images (77%).
Is r/100yearsago SFW?
Yes. Reddit does not mark r/100yearsago as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
What are the rules of r/100yearsago?
Join the community on Reddit first, then use “Create post”. r/100yearsago accepts both text and link posts, with images, videos, galleries and polls enabled. It has 4 posted rules, starting with: “Must be Content from 100 Years Ago”; “Start Submission Titles with the Date”; “Follow Reddiquette”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
What subreddits are similar to r/100yearsago?
Communities with similar topics include r/Fauxmoi (6.9M), r/HistoryMemes (12.8M), r/disney (2.4M), r/BestofRedditorUpdates (4M) and r/DoesAnybodyElse (2.8M).
Stats from public data (data updated Nov 2, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 6, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/100yearsago.