Time zone · Africa
IOT
Indian Ocean Time
Indian Ocean Time (IOT) is straightforward and steady—no daylight saving changes whatsoever, just a flat UTC+06:00 all year round. For anyone collaborating with the British Indian Ocean Territory's Chagos Archipelago, that predictability is the whole story: you set your clock once, and it stays put.
Thursday, October 15, 2026
Current offset
UTC+06:00
Standard · +06
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About IOT
A fixed, year-round offset.
Indian Ocean Time (IOT) is straightforward and steady—no daylight saving changes whatsoever, just a flat UTC+06:00 all year round. For anyone collaborating with the British Indian Ocean Territory's Chagos Archipelago, that predictability is the whole story: you set your clock once, and it stays put.
IANA zones · the technical identifiers
The zone that resolve to IOT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Cities across IOT
Local time, city by city.
1 city
Where IOT is used
One country.
Same offset · UTC+06:00
Other zones at UTC+06:00 right now.
These named zones share IOT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
IOT to the world's clocks.
Frequently asked questions
Common questions about IOT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- How many zones use Indian Ocean Time?
- Just one—the Chagos Archipelago in the British Indian Ocean Territory. That makes IOT one of the smallest dedicated timezone codes in the world.
- Does Indian Ocean Time ever shift for daylight saving?
- No. IOT has never observed daylight saving time. The clocks have held steady since the region formally adopted UTC+06:00.
- Is IOT the same as Sri Lanka or Maldives time?
- No. IOT is UTC+06:00, while the Maldives uses UTC+05:00 and Sri Lanka UTC+05:30. IOT is used only in the Chagos Archipelago.
- How far back does IOT's offset stay valid?
- The Chagos Archipelago moved from UTC+05:00 to UTC+06:00 on 1 January 1996 and has kept that offset since.
- What country uses IOT?
- Only the British Indian Ocean Territory, specifically the Chagos Archipelago, uses Indian Ocean Time.
- Is there any DST planning needed for IOT?
- None at all. With zero daylight saving transitions on record, IOT keeps things simple for anyone scheduling across continents.
- What is a common misconception about IOT?
- Some assume Indian Ocean Time is widely used across the Indian Ocean. In reality, it's a niche code—one territory, one offset, no daylight saving adjustments.
- How does IOT compare to nearby zones?
- IOT is UTC+06:00, one hour ahead of the Maldives (UTC+05:00) and 30 minutes ahead of India and Sri Lanka (UTC+05:30). None of them use daylight saving time.
Source: IANA tzdb2026d · Reviewed
Free · Developer API
This time zone, as JSON.
Its defining offset, DST status and member counts, from one endpoint.
Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.
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