IANA tz database · zone identifier

Asia/Pontianak

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

UTC+07:00Abbreviation WIBNo daylight saving
Time in Asia/Pontianak☀ Daylight
06:00:51
Thursday, October 15, 2026
Offset
UTC+07:00
Abbreviation
WIB
DST
No DST

Current offset

UTC+07:00

same year-round

Abbreviation

WIB

used year-round

DST behaviour

None

one offset all year

Country

🇮🇩 Indonesia

ISO 3166: ID · view country page →

Using this identifier

The string to put in your code.

Asia/Pontianak 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 WIB 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/Pontianak',
dateStyle: 'full', timeStyle: 'long'
}).format(new Date());

Offset & DST behaviour

One offset,
38 years.

Asia/Pontianak has kept UTC+07:00 year-round since 31 December 1987 — 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

+07:17:20UTC+07:00 · UNCHANGED 31 December 1987 NOW

Keeping this offset since

31 December 1987

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/Pontianak
ISO country codeID🇮🇩 Indonesia
Reference coordinates0.03°S, 109.33°Etz database reference point
Standard offsetUTC+07:00abbreviation WIB
Daylight offset—no daylight saving time
tzdb release2026ddata current as of this IANA release

Where it applies

One of Indonesia's 4 zones.

Looking for travel-friendly info? See Pontianak or Western Indonesia Time.

🇮🇩
Indonesia

275M people, 4 time zones — this identifier covers one of them.

Country page →
🇮🇩 Pontianak
06:00
06:00:51 · WIB
pop. 681KWIB

Related identifiers

Nearby in the database.

Same zone group · Western Indonesia Time

other identifiers keeping WIB

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/Pontianak?
Asia/Pontianak is UTC+07:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Asia/Pontianak observe daylight saving time?
No. Asia/Pontianak stays on UTC+07:00 all year, as it has since 31 December 1987.
Which country uses Asia/Pontianak?
Indonesia. It is one of 4 IANA zones covering the country.
Is Asia/Pontianak the same as WIB?
Asia/Pontianak is one of the IANA zones that keeps Western Indonesia Time (WIB). Use Asia/Pontianak in software — WIB 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/Pontianak
{
"data": {
"iana": "Asia/Pontianak",
"observes_dst": false,
"country": { "code": "ID", "name": "Indonesia" },
"current": {
"utc_offset": "+07:00",
"abbreviation": "WIB",
…
},
…
}
}