IANA tz database · zone identifier

Asia/Macau

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

UTC+08:00Abbreviation CSTNo DST — never observed

Time in Asia/Macau☀ Daylight

06:58:05

Thursday, July 16, 2026

Offset

UTC+08:00

Abbreviation

CST

DST

No DST

Current offset

UTC+08:00

same year-round

Abbreviation

CST

used year-round

DST behaviour

Never

has never observed daylight saving

Country

🇲🇴 Macau

ISO 3166: MO · view country page →

Using this identifier

The string to put in your code.

Asia/Macau 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 CST or +08:00 — abbreviations are ambiguous and fixed offsets can't follow rule changes.

// format a date in this zone

new Intl.DateTimeFormat('en-US', {

timeZone: 'Asia/Macau',

dateStyle: 'full', timeStyle: 'long'

}).format(new Date());

Offset & DST behaviour

One offset,
46 years.

Asia/Macau has kept UTC+08:00 year-round since 21 October 1979 — 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

Keeping this offset since

21 October 1979

Next transition

None scheduled

no DST rules exist for this zone

Safe to assume

Local = UTC + 8h, always

…but store the identifier anyway

Technical record

The database entry, in full.

source: IANA tz database

IdentifierAsia/Macau

ISO country codeMO🇲🇴 Macau

Reference coordinates22.20°N, 113.54°Etz database reference point

Standard offsetUTC+08:00abbreviation CST

Daylight offset—daylight saving has never been observed

Where it applies

All of Macau, one clock.

Looking for travel-friendly info? See Macau or China Standard Time.

🇲🇴

Macau

682K people, one time zone. The whole country resolves to Asia/Macau.

Related identifiers

Nearby in the database.

Same zone group · China Standard Time

other identifiers keeping CST

Asia/ShanghaiChina

Same offset · UTC+08:00

other zones keeping this offset right now

Asia/BruneiBrunei · Brunei Darussalam Time Asia/Hong_KongHong Kong · Hong Kong Standard Time Asia/IrkutskRussia · Irkutsk Standard Time Asia/Kuala_LumpurMalaysia · Malaysia Time Asia/KuchingMalaysia · Malaysia Time Asia/MakassarIndonesia · Central Indonesia Time

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/Macau?: Asia/Macau is UTC+08:00, year-round. The offset never changes because the zone does not observe daylight saving time.
Does Asia/Macau observe daylight saving time?: No. Asia/Macau has never observed DST — it has kept UTC+08:00 continuously since 21 October 1979.
Which country uses Asia/Macau?: Macau. The identifier covers the whole country.
Is Asia/Macau the same as CST?: Asia/Macau is one of the IANA zones that keeps China Standard Time (CST). Use Asia/Macau in software — CST 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/Macau

{

"iana": "Asia/Macau",

"utc_offset": "+08:00",

"abbreviation": "CST",

"observes_dst": false,

"country": "MO"

}