#Shijian21
Live, measured metrics for the hashtag #Shijian21 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #shijian21
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 · fosstodon.org (Mastodon public tags API) · fetched 2026-10-07 08:44 UTC0 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 2026-10-07 08:44 UTCNo related tags with measured usage found for #shijian21.
Live pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-07 08:44 UTCEverything below is measured over the latest 6 public posts (spanning ~7869 hours).
Posting hours (UTC)
Languages: English (5) · German (1)
Avg boosts / post: 0.5
Top of the latest posts
China’s Shijian spacecraft separate after pioneering geosynchronous orbit refueling tests https://fed.brid.gy/r/https://spacenews.com/chinas-shijian-spacecraft-separate-after-pioneering-geosynchronous-orbit-refueling-tests/
SpaceNews: The space industry's source [Unofficial]@[email protected]♥ 0↻ 12025-11-30 19:08 UTCView post →#China's #spacecraft prepare for orbital refueling test as US surveillance sats lurk nearby According to footage captured by s2a systems, #satellites, #Shijian21 and #Shijian25, flew into extremely close proximity on both June 13 and 14. No
#SCMP: " China’s landmark orbital refuelling mission: why 2 US spy satellites hover nearby Shijian-25 is expected to use its robotic arms to latch onto Shijian-21 and replenish its fuel " https://www.scmp.com/news/china/science/article/3314
What “shijian21” means
WikipediaShijian is a series of satellites built and operated by the People's Republic of China. Some Shijian-series satellites have drawn significant concerns from the United States government and space observers who cite unannounced launches, undisclosed sub-satellites deployed in orbit, unusual orbital maneuvers, and demonstrated rendezvous proximity operations (RPO) including the close inspection and towing of other satellites.
“Shijian” on Wikipedia (CC BY-SA) →#shijian21 across platforms
every network with a public tag surfaceFollow #shijian21 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/shijian21