IANA tz database · zone identifier

Asia/Vientiane

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

UTC+07:00Abbreviation +07No daylight saving
Time in Asia/Vientiane☀ Daylight
06:00:34
Thursday, October 15, 2026
Offset
UTC+07:00
Abbreviation
+07
DST
No DST

Current offset

UTC+07:00

same year-round

Abbreviation

+07

tzdb uses numeric abbreviations here

DST behaviour

None

one offset all year

Country

🇱🇦 Laos

ISO 3166: LA · view country page →

Using this identifier

The string to put in your code.

Asia/Vientiane 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 +07 or +07:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

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

Offset & DST behaviour

One offset,
71 years.

Asia/Vientiane has kept UTC+07:00 year-round since 14 April 1955 — 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

+06:50:24UTC+07:00 · UNCHANGED 14 April 1955 NOW

Keeping this offset since

14 April 1955

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC + 7h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database · release 2026d

IdentifierAsia/Vientiane
ISO country codeLA🇱🇦 Laos
Reference coordinates17.97°N, 102.60°Etz database reference point
Standard offsetUTC+07:00abbreviation +07
Daylight offset—no daylight saving time
tzdb release2026ddata current as of this IANA release

Where it applies

All of Laos, one clock.

Looking for travel-friendly info? See Vientiane or Indochina Time.

🇱🇦
Laos

6.9M people, one time zone. The whole country resolves to Asia/Vientiane.

Country page →
🇱🇦 Vientiane
06:00
06:00:34 · +07
pop. 948KINDOCH

Related identifiers

Nearby in the database.

Same zone group · Indochina Time

other identifiers keeping INDOCH

Same offset · UTC+07:00

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/Vientiane?
Asia/Vientiane is UTC+07:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Asia/Vientiane observe daylight saving time?
No. Asia/Vientiane stays on UTC+07:00 all year, as it has since 14 April 1955.
Which country uses Asia/Vientiane?
Laos. The identifier covers the whole country.
Is Asia/Vientiane the same as INDOCH?
Asia/Vientiane is one of the IANA zones that keeps Indochina Time (INDOCH). Use Asia/Vientiane in software — INDOCH is a human-friendly label, not a valid identifier.

Free · Developer API

This zone, as JSON.

Its live offset, abbreviation and DST status, plus its coordinates and country, from one endpoint.

GET /v1/timezones 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.

// this identifier, resolved live
GET /v1/timezones/Asia/Vientiane
{
"data": {
"iana": "Asia/Vientiane",
"observes_dst": false,
"country": { "code": "LA", "name": "Laos" },
"current": {
"utc_offset": "+07:00",
"abbreviation": "+07",
…
},
…
}
}