IANA tz database · zone identifier

Asia/Srednekolymsk

The IANA tz database identifier for Srednekolymsk Time in Russia. Store this string — not the abbreviation, not the offset — and your timestamps stay correct forever.

UTC+11:00Abbreviation +11No DST — never observed
Time in Asia/Srednekolymsk☀ Daylight
09:59:56
Thursday, July 16, 2026
Offset
UTC+11:00
Abbreviation
+11
DST
No DST

Current offset

UTC+11:00

same year-round

Abbreviation

+11

tzdb uses numeric abbreviations here

DST behaviour

Never

has never observed daylight saving

Country

🇷🇺 Russia

ISO 3166: RU · view country page →

Using this identifier

The string to put in your code.

Asia/Srednekolymsk is the identifier to use in code and config for this region. Every modern language, database, and OS resolves it through the same tz database, so the examples here behave identically everywhere.

Avoid storing +11 or +11:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

// format a date in this zone
new Intl.DateTimeFormat('en-US', {
timeZone: 'Asia/Srednekolymsk',
dateStyle: 'full', timeStyle: 'long'
}).format(new Date());

Offset & DST behaviour

One offset,
11 years.

Asia/Srednekolymsk has kept UTC+11:00 year-round since 26 October 2014 — no daylight saving and no offset changes on record since. It is among the most stable identifiers in the database.

Every offset this zone has kept

+10:14:52UTC+11:00 · UNCHANGED 26 October 2014 NOW

Keeping this offset since

26 October 2014

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC + 11h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAsia/Srednekolymsk
ISO country codeRU🇷🇺 Russia
Reference coordinates67.47°N, 153.72°Etz database reference point
Standard offsetUTC+11:00abbreviation +11
Daylight offset—daylight saving has never been observed

Where it applies

One of Russia's 26 zones.

🇷🇺
Russia

146M people, 26 time zones — this identifier covers one of them.

Country page →

Related identifiers

Nearby in the database.

Same offset · UTC+11:00

other zones keeping this offset right now

Frequently asked questions

Answers specific to this identifier — generated from the database record. Can't find what you need? Email [email protected].

What UTC offset is Asia/Srednekolymsk?
Asia/Srednekolymsk is UTC+11:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Asia/Srednekolymsk observe daylight saving time?
No. Asia/Srednekolymsk has never observed DST — it has kept UTC+11:00 continuously since 26 October 2014.
Which country uses Asia/Srednekolymsk?
Russia. It is one of 26 IANA zones covering the country.
Is Asia/Srednekolymsk the same as SREDNE?
Asia/Srednekolymsk is one of the IANA zones that keeps Srednekolymsk Time (SREDNE). Use Asia/Srednekolymsk in software — SREDNE is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Everything on this page — offset, abbreviation, DST rules, coordinates — from one endpoint, always current with the latest tzdb release.

GET /v1/timezones Live

countries, cities, convert, DST transitions coming next.

Get your free API key →
// this identifier, resolved live
GET /v1/timezones?iana=Asia/Srednekolymsk
{
"iana": "Asia/Srednekolymsk",
"utc_offset": "+11:00",
"abbreviation": "+11",
"observes_dst": false,
"country": "RU"
}