GiiGio · Good Idea In, Great Idea Out
UTC time zone converter
Scroll, drag or use the arrow keys on any strip. All strips move together. + Add zone adds up to six zones, and the green line shows when everyone is at work. Select hours marks a range; 👤 makes a zone follow whoever opens the link.
up to 6 zones; the first is the reference
Links and shortcuts
- 👤 Whoever opens the link: press 👤 next to a zone and it becomes each viewer’s own time zone (
*in the link). Copy link copies exactly what you see: a fixed zone stays fixed, a 👤 zone follows whoever opens the link. A moment or range in a 👤 zone is written with its offset, so everyone sees the same instant. - More zones: + Add zone adds up to six. The first zone is the reference (From): a moment or range in the link is written in its time. ↑ moves a zone up one, ⤒ moves it to the top (the reference), × removes it. Each zone shows how far it is ahead of or behind the reference. Links list the zones in order:
utc.giig.io/copenhagen/new-york/kolkata. - Everyone at work: the green line on top of the strips marks when every zone is inside 08–18. Under the zones you see the best window of the reference zone’s day; when no time fits everyone it says how many are at work. Select it turns the window into a range you can share.
- Time range: press Select hours and drag across either strip (a tap selects one hour), then drag the range’s edges to adjust it. The bar shows how much of the range falls in the other zone’s working hours. Links:
utc.giig.io/copenhagen/*/2026-09-28T08:00..16:00, or…/cest/*/8..16for today. - Mouse wheel over a strip: 15 minutes per notch, 1 hour with Shift. Drag or swipe left and right, or click a spot to jump to it.
- Keys on a focused strip: ← → 15 minutes, Shift + arrows or Page Up / Page Down 1 hour, Home back to now.
- Links:
utc.giig.io/pst/cest,utc.giig.io/utc-5/utc+2,utc.giig.io/utc+5:30/cet,utc.giig.io/new-york/tokyo,utc.giig.io/America/Chicago/Europe/London. - In the link,
*(orlocal) is the 👤 zone:utc.giig.io/*/cestshows your time next to CEST;utc.giig.io/cest/*/2026-10-01T15:00shows 15:00 CEST in each viewer’s own time. - A moment as a third part, in the first zone:
utc.giig.io/est/ist/2026-10-01T09:00or just…/est/ist/09:00for today. Scrolling puts the moment in the address bar; Now takes it out again. In the hour the clocks go back, the link carries the offset, e.g.…/cet/utc/2026-10-25T02:30+01:00. - Abbreviations follow daylight saving:
pstshows Los Angeles time, which is PDT in summer. For a fixed offset useutc-8. IST is India, CST is US Central, BST is British Summer Time. - Everything runs in your browser. No cookies, no tracking, and nothing is sent anywhere; the 24h/12h choice is kept in this browser only.