sky (noun): The atmosphere above a given point, especially as visible from the ground during the day. As a hashtag, #sky carries this topic across social platforms.

In the last 7 days, #sky was used 141 times by 121 accounts on the open social web, measured via fosstodon.org (Mastodon public tags API).

What hashtags are related to #sky?

Related hashtags include #SkyNet, #skyrim, #SkyTonight, #Skyline, #NoMansSky, #skyscape, #SkyDance, #skyscraper.

How much does it cost to own #sky?

#sky is available as a #name from $5,313.74 per year. You can claim it by card at https://hashtag.org/checkout/portal-name?name=sky or with tokens on hashtag.space at https://hashtag.space/#sky.

#sky

Name: #sky — a #name on hashtag.org
Brand: hashtag.org
Price: 5313.74 USD
Availability: InStock

Live, measured metrics for the hashtag #sky 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 #sky

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.

$5,313.74/ year · 3-character #name

Claim #sky — $5,313.74/yr→Buy on hashtag.space (web3)

card via hashtag.org · tokens via hashtag.space

141

Uses / 7 days

Mastodon

121

Accounts / 7 days

Mastodon

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-09-15 15:19 UTC

09-09

09-10

09-11

09-12

09-13

09-14

09-15

141 uses by 121 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 2026-09-15 15:19 UTC

#SkyNet

27 uses · 24 accounts / 7d

#skyrim

42 uses · 41 accounts / 7d

#SkyTonight

0 uses · 0 accounts / 7d

#Skyline

15 uses · 13 accounts / 7d

#NoMansSky

89 uses · 62 accounts / 7d

#skyscape

14 uses · 12 accounts / 7d

#SkyDance

4 uses · 4 accounts / 7d

#skyscraper

9 uses · 9 accounts / 7d

#sky47

0 uses · 0 accounts / 7d

#skynews

52 uses · 11 accounts / 7d

#NightSky

46 uses · 13 accounts / 7d

#skyCOTL

1 uses · 1 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-15 15:19 UTC

Everything below is measured over the latest 40 public posts (spanning ~38 hours).

Posting hours (UTC) — busiest: 11:00

00:0012:0023:00

Languages: English (17) · Japanese (2) · German (2) · Portuguese (1)

Avg boosts / post: 2

Used together with

#photography ×19 #nature ×18 #clouds ×18 #landscape ×13 #naturephotography ×9 #trees ×7 #art ×4 #morning ×4 #sunset ×4 #summer ×4 #green ×4 #skyscape ×4

What “sky” means

Wiktionary · Wikipedia

sky/skaɪ/

nounThe atmosphere above a given point, especially as visible from the ground during the day.
verbTo hit, kick or throw (a ball) extremely high.

Full entry on Wiktionary →

The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space.

“Sky” on Wikipedia (CC BY-SA) →

#sky across platforms

every network with a public tag surface

Follow #sky 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.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/sky