r/ThisDayInHistory↗
This Day in History
A place to commemorate and discuss historical events which took place on this calendar date at least twenty years ago. Please read the community rules before participating.
179k subscribers335 posts / mo in Sep 2026 (incl. ~24% by known bots)90 authors / mosince 2011
r/ThisDayInHistory has 179k members (+21% over the last 12 months). It gets about 335 posts a month from 90 people. Top topics: Historical Battles and Wars, Historical Anniversaries and Julius Caesar and Roman Empire.
When to post on r/ThisDayInHistory
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How r/ThisDayInHistory has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/ThisDayInHistory
Top topics
Share of the subreddit's posts
- Historical Battles and Wars6.6%
- Historical Anniversaries6.5%
- Julius Caesar and Roman Empire1.8%
- American Revolutionary War and War of 1812 Battles1.6%
- Historic Explorations and Colonizations1.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Substack
- the United Nations
- Wikimedia
- HISTORY
- TIME
Everything else about r/ThisDayInHistory
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research