#onthisday

We track 648 posts using #onthisday across 7 networks, carrying 36.4M engagement between them — an average of 56.2K per post.

It is used most on Bluesky: 453 of the 648 posts we hold, 70% of the total.

Where it performs hardest per post, though, is TikTok, averaging 238.9K — so the tag is posted most in one place and lands best in another, which is exactly the difference worth knowing before choosing where to use it.

Ranking comes from the posts themselves rather than from how often the tag appears, and it is recalculated as new posts are collected. How we measure this →