The guide
When to post on Reddit, and why it matters
Timing is the cheapest ranking lever on Reddit. The same post can hit the front of a subreddit or sink without a vote depending on when it goes live.
Why posting time matters on Reddit
Reddit's Hot ranking weighs upvotes against a post's age, so a post has a short window to collect votes before newer posts push it down. Post when the subreddit's audience is asleep and the window closes before anyone sees it. Post just before they arrive and the first readers lift it into Hot, where everyone else finds it.
The general best time to post on Reddit
Across large, US-heavy subreddits the busiest window is weekday mornings Eastern time, roughly 6 to 10am, when the US is waking up and Europe is still online. Weekends tend to be quieter for professional communities and busier for hobby ones. Treat this as a starting point only: it's an average over very different communities.
Why every subreddit has its own best time
r/SaaS, r/AskUK and a gaming subreddit peak at completely different hours because their members live in different time zones and use Reddit at different moments of their day. Work-related subreddits often peak during office hours, while hobby subreddits peak in the evening and on weekends. That's why this tool charts each subreddit's own top posts instead of repeating one global answer.
How to read the heatmap
Darker cells are hours when more of the top posts of the past year went live. The three outlined cells are the strongest slots, spaced so they are not all the same hour. Aim to publish 30 to 60 minutes before a peak so your post already has a few votes when the most people show up, then stay around to answer comments during the first hour.
The note under the chart tells you how fast new posts arrive. In a subreddit with 100 posts a day, a post leaves the top of New within minutes, so timing matters a lot. In a subreddit with a few posts a day, it barely matters.
The best time to comment
For comments, the thread's age matters more than the clock. Early comments on a rising thread collect most of the upvotes and stay at the top; late ones get buried. If you're using Reddit to reach customers, replying to the right thread in its first hour beats any posting schedule, and that is exactly what Bazzly watches for.