r/scifi peaks Saturdays 1am-3am UTC
r/scifi was created on January 25, 2008, making it 18 years and 8 months old and one of the earliest subreddits on Reddit. With 4,484,975 members, this is a large and well-established subreddit with significant reach and influence on Reddit.
r/scifi is steadily growing, with 7,210 new members in the last 30 days.
r/scifi shows typical engagement for a community of this scale, with an average of 97.6 upvotes per post across its 4,484,975 members. The community is highly discussion-oriented, with a comment-to-upvote ratio of 1.57. To reach the Hot section of r/scifi, posts typically need at least 7 upvotes, reflecting the community's activity level.
Posts on r/scifi receive an average of 153.0 comments, indicating a highly engaged community where members actively participate in conversations rather than passively consuming content. This level of discussion is characteristic of communities that value dialogue and diverse perspectives.
Based on an analysis of 81 top posts from the past week, Saturday is the most active day with 20 posts reaching the top, while Friday sees the least activity with 7 posts. Weekend activity tends to outpace weekdays, suggesting a more leisure-oriented community.
The peak posting hours are around 1am UTC (6 posts), 11pm UTC (6 posts), and 6am UTC (6 posts). The quietest hours are 3am UTC, 2pm UTC, and 11am UTC, with only 2-1 posts each reaching the top during these times.
Weekly breakdown: Monday (7), Tuesday (15), Wednesday (11), Thursday (12), Friday (7), Saturday (20), Sunday (9) posts reaching the top.
r/scifi currently has 4,484,975 subscribers. Over the past 30 days, the community has grown by 7,210 members (0.16%), averaging 225 new subscribers per day. This growth rate places r/scifi in the top 28% of all tracked subreddits.
Over the past 90 days, r/scifi has gained 19,991 subscribers (0.45%). Since tracking began 649 days ago, the community has added 180,174 total subscribers.
r/scifi is steadily growing, with 7,210 new members in the last 30 days.
r/scifi has 4,484,975 subscribers as of September 2026.
The best time to post on r/scifi is Saturdays 1am-3am UTC, based on analysis of top-performing posts from the past week.
r/scifi is steadily growing, with 7,210 new members in the last 30 days.
r/scifi was created on January 25, 2008, making it 18 years old.
Posts on r/scifi typically need at least 7 upvotes to reach the Hot section.
r/scifi is a Reddit community with 4,484,975 subscribers. The community describes itself as: "Welcome to r/scifi, a home for all things science fiction, the heart of speculative fiction. Join the discussion about your favorite books, authors, movies, shows, comics, and games — anything..." The best time to post on r/scifi is Saturdays 1am-3am UTC. Posts receive an average of 97.6 upvotes and 153.0 comments. The minimum upvotes needed to reach the Hot section is approximately 7. The subreddit is adding approximately 225 new members each day. Founded 18 years ago, r/scifi is tracked and analyzed by RedditList as part of its comprehensive database of over 106,367 subreddits.
Last updated: 2026-07-25 02:52:24