#quantumday

Live, measured metrics for the hashtag #quantumday from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #quantumday

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.

$23.52/ year · 10-character #name
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card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
11
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 11
8.7
Avg reactions / post
Mastodon · last 11

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-07-27 22:29 UTC
0
07-21
0
07-22
0
07-23
0
07-24
0
07-25
0
07-26
0
07-27

0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-07-27 22:29 UTC
#quantumdays2025
0 uses · 0 accounts / 7d
#quantumdays
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-07-27 22:29 UTC

Everything below is measured over the latest 11 public posts (spanning ~29277 hours).

Posting hours (UTC)

00:0012:0023:00

Languages: English (9) · German (2)

Avg boosts / post: 25

Top of the latest posts

  • The transition from classical to quantum physics went about as smoothly as you would expect. Happy #QuantumDay! (Unfortunately, I have no idea who made this classic physics meme. It has been around forever. If you know, please tell me!)

    Robert McNees@[email protected]♥ 91↻ 572025-12-14 20:22 UTCView post →

  • Happy #QuantumDay, everyone! 😊 Discovering #quantumtheory revolutionized #physics forever - and might even make your hair stand on end! 😉 #MaxPlanck

    Max-Planck-Gesellschaft@[email protected]♥ 2↻ 412025-04-14 10:17 UTCView post →

  • Happy #QuantumDay to all who celebrate! Max Planck presented work on blackbody radiation to the German Physical Society #OTD in 1900. His novel “quantum hypothesis” suggested that matter emits and absorbs light with frequency f only in disc

    Robert McNees@[email protected]♥ 2↻ 632023-12-14 15:29 UTCView post →

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/quantumday