#ChallengeDay

Live, measured metrics for the hashtag #ChallengeDay 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 #challengeday

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.

$5.00/ year · 12-character #name
Claim #challengeday — $5.00/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
14
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 14
0.6
Avg reactions / post
Mastodon · last 14
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mas.to (Mastodon public tags API) · fetched 2026-09-29 10:28 UTC
0
09-23
0
09-24
0
09-25
0
09-26
0
09-27
0
09-28
0
09-29

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

Related hashtags

measured · mas.to (Mastodon public search API) · fetched 2026-09-29 10:28 UTC

Live pulse

measured · mas.to (Mastodon tag timeline) · fetched 2026-09-29 10:28 UTC

Everything below is measured over the latest 14 public posts (spanning ~2602 hours).

Posting hours (UTC) — busiest: 19:00

00:0012:0023:00

Languages: English (13) · Italian (1)

Avg boosts / post: 0.1

Top of the latest posts

  • Countdown Day 93 of our "100 days to launch" challenge. We really struggle with applying fibreglass to the underside of things, especially when the shapes are awkward and space is tight. So today was difficult but is done - glassing in the

    Sustainable Sailing@SustainableSailing♥ 2↻ 02026-03-18 16:18 UTCView post →
  • Countdown Day 97 of our "100 day to launch" challenge. Today we have finished a job!! The hot box for composting the solids from our composting toilet is done. #BoatRefit #Composting #DIY #ChallengeDay https://youtu.be/YLDBr1QPmSM

    Sustainable Sailing@SustainableSailing♥ 2↻ 02026-03-14 17:28 UTCView post →
  • Day 98 of our "100 day to launch" challenge. Cracking on with the jobs.Jane is preparing to insulate the aft cabin entrance. Dave is working on the Electric Motor Battery Box and the hot box for composting the solids from our composting toi

    Sustainable Sailing@SustainableSailing♥ 2↻ 02026-03-13 19:00 UTCView post →

#challengeday across platforms

every network with a public tag surface

Follow #challengeday 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/challengeday