Time zone · Antarctic

SYOWAT

Syowa Time

Syowa Time is UTC+03:00 all year round, with no seasonal clock changes. Japan's Syowa Station, on East Ongul Island off the Antarctic coast, has used this offset since it opened in January 1957.

UTC+03:00 standard1 IANA zone
Current time in SYOWAT☾ Night
01:26:34

Thursday, October 15, 2026

☾ NIGHT 06:00noon18:00
Standard
+03 · +3
IANA zones
1

Current offset

UTC+03:00

Standard · +03

Daylight saving

Not observed

Year-round standard time

IANA zones

1

None observe daylight saving

DST offset

—

No summer variant

About SYOWAT

A fixed, year-round offset.

Syowa Time is UTC+03:00 all year round, with no seasonal clock changes. Japan's Syowa Station, on East Ongul Island off the Antarctic coast, has used this offset since it opened in January 1957.

IANA zones · the technical identifiers

The zone that resolve to SYOWAT.

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.

IANA zonePrimary cityDST
Antarctica/SyowaSyowa— None

Where SYOWAT is used

One country.

Antarctica

Same offset · UTC+03:00

Other zones at UTC+03:00 right now.

These named zones share SYOWAT's offset today. When daylight saving rules differ, they drift apart for part of the year.

AMMANTUTC+3
--:--
Amman Time
Asia— No DST
Jordan
ASTUTC+3
--:--
Arabian Standard Time
Asia— No DST
YemenIraqBahrain +3
DAMASCUTC+3
--:--
Damascus Time
Asia— No DST
Syria
EATUTC+3
--:--
East Africa Time
Africa— No DST
EthiopiaEritreaTanzania +7
EESTUTC+3
--:--
Eastern European Summer Time
Europe▲ Observes DST
EgyptLebanonCyprus +11
IDTUTC+3
--:--
Israel Daylight Time
Asia▲ Observes DST
Israel
ISTANBUTC+3
--:--
Istanbul Time
Asia— No DST
Turkey
MSKUTC+3
--:--
Kirov Time
Europe— No DST
Russia
MSTUTC+3
--:--
Moscow Standard Time
Europe— No DST
BelarusRussiaUkraine
MSKUTC+3
--:--
Volgograd Standard Time
Europe— No DST
Russia

Convert

SYOWAT to the world's clocks.

Open the converter →
Syowa Time
1:26am
Eastern Daylight Time
6:26pm
Syowa Time to Eastern Time7 hours ahead
Syowa Time
1:26am
Pacific Time
3:26pm
Syowa Time to Pacific Time10 hours ahead
Syowa Time
1:26am
British Summer Time
11:26pm
Syowa Time to London (GMT)2 hours ahead
Syowa Time
1:26am
Central European Time
12:26am
Syowa Time to Central Europe1 hour ahead
Syowa Time
1:26am
India Standard Time
3:56am
Syowa Time to India2 hours 30 minutes behind
Syowa Time
1:26am
Japan Standard Time
7:26am
Syowa Time to Japan6 hours behind

Frequently asked questions

Common questions about SYOWAT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].

What time zone does Japan’s Syowa research station use?
Syowa Station follows a fixed offset of UTC+03:00, the same as East Africa Time and Moscow Time.
Does SYOWAT observe daylight saving?
No. Syowa Station stays on UTC+03:00 all year and has never used daylight saving time.
How far behind Tokyo is Syowa Time?
UTC+03:00 is six hours behind Japan Standard Time (UTC+09:00), so subtract six hours from Tokyo time to get the time at Syowa.
When was the UTC+03:00 offset adopted?
Syowa has used UTC+03:00 since January 29, 1957, the day the station was established.
Could Syowa Time change in the future?
Only if Japan's Antarctic program decides to change it. Syowa has stayed on UTC+03:00 since 1957, and no change is scheduled.

Source: IANA tzdb2026d · Reviewed

Free · Developer API

This time zone, as JSON.

Its defining offset, DST status and member counts, from one endpoint.

GET /v1/abbreviations Live

Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.

Get your free API key → All endpoints Plans and pricing

Moving off WorldTimeAPI? Our drop-in replacement needs no key.

// SYOWAT, by slug (codes can be shared)
GET /v1/abbreviations/syowa-time
{
"data": {
"code": "SYOWAT",
"name": "Syowa Time",
"counts": { "timezones": 1, "countries": 1 },
…
}
}