#happypiday
Live, measured metrics for the hashtag #happypiday from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #happypiday
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-11-11 17:37 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-11-11 17:37 UTCLive pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-11-11 17:37 UTCEverything below is measured over the latest 40 public posts (spanning ~8778 hours).
Posting hours (UTC) — busiest: 14:00
Languages: English (35) · Korean (2) · German (2)
Avg boosts / post: 2.4
Top of the latest posts
🎶 3.1415926535… 🎶 For #PiDay, enjoy the first 50 digits of Pi, sung to the tune of the Battle Hymn of the Republic. 𝝅 It’s one of 56 delightfully nerdy readings of The First Fifty Digits of Pi by LibriVox volunteers, performed in styles
#HappyPiDay #DYK Rajveer Meena of India, recited the first 70,000 decimal places of π in 2015? In 2021, π was calculated to over 62.8 trillion decimal places by computers. The earliest known calculation of π is dated to ancient Egypt ~1650
Husband was talking to his friend on the phone, and he had to explain what a Pi Day was, by even mentioning that Pi is 3.14. I then went to grocery shopping, and there were no pies. Just some round coffee cakes. I mean seriously. It's a big
#happypiday across platforms
every network with a public tag surfaceFollow #happypiday straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/happypiday