#ultraviolet

Live, measured metrics for the hashtag #ultraviolet 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 #ultraviolet

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.

$10.85/ year · 11-character #name
Claim #ultraviolet — $10.85/yr→
Annual, renews each year
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card via hashtag.org · tokens via hashtag.space
1
Uses / 7 days
Mastodon
1
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.3
Avg reactions / post
Mastodon · last 40

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-07-27 07:54 UTC
0
07-21
0
07-22
0
07-23
0
07-24
0
07-25
1
07-26
0
07-27

1 uses by 1 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 07:54 UTC
#ultravioletgrasslands
0 uses · 0 accounts / 7d
#UltraViolette
0 uses · 0 accounts / 7d
#ultravioletindex
0 uses · 0 accounts / 7d
#ultraviolettisateily
0 uses · 0 accounts / 7d
#ultravioletshanghai
0 uses · 0 accounts / 7d
#UltravioletLight
0 uses · 0 accounts / 7d
#ultravioletflashlight
0 uses · 0 accounts / 7d
#ultravioletspace
0 uses · 0 accounts / 7d
#ultraviolettstories
0 uses · 0 accounts / 7d
#UltraVioletStories
0 uses · 0 accounts / 7d
#ultravioletsterilisinglamp
0 uses · 0 accounts / 7d
#UltravioletInducedFluorescence
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-07-27 07:54 UTC

Everything below is measured over the latest 40 public posts (spanning ~4534 hours).

Posting hours (UTC) — busiest: 03:00

00:0012:0023:00

Languages: English (17) · Dutch (1)

Avg boosts / post: 1.2

Top of the latest posts

  • Thunderstorms often illuminate the night sky with flashes of #lightning. They also seem to make treetops glow and sparkle—although the phenomenon is pretty much invisible to the naked eye. Now scientists have provided the first direct obser

    Mikko Tuomi@[email protected]♥ 6↻ 222026-03-04 10:05 UTCView post →

  • UV Fur is fun #fursuit #furry #ultraviolet

    Slip Wolff@[email protected]♥ 2↻ 12026-07-25 22:56 UTCView post →

  • More rain and dismal murk in Mull today. Also lots of seaweed washed up on the beach. I had a notion about some of the red seaweeds, so brought some home for a wee test: behold the gorgeous orange fluorescence under 365nm UV light 🤩😊 #Ult

    John Faithfull 🌍🇪🇺🏴󠁧󠁢󠁳󠁣󠁴󠁿🧡✊🏻✊🏿@[email protected]♥ 2↻ 142026-07-07 10:47 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/ultraviolet