Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Beijing to GMT

-8h

Beijing

CSTSOURCE

China · UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

GMT

UTC+01:00☀ DST active

HH04

MM00

04:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Beijing

GMT

12:00 AM

5:00 PM-1

2:00 AM

7:00 PM-1

4:00 AM

9:00 PM-1

6:00 AM

11:00 PM-1

8:00 AM

1:00 AM

10:00 AM

3:00 AM

12:00 PM

5:00 AM

2:00 PM

7:00 AM

4:00 PM

9:00 AM

6:00 PM

11:00 AM

8:00 PM

1:00 PM

10:00 PM

3:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

CST and GMT on the World Map

The map below highlights the CST (China Standard Time) and GMT (Greenwich Mean Time) timezone regions across the globe.

CST Zone

→

GMT Zone

Explore all world timezones interactively →

CST – China Standard Time

UTC+08:00

China Standard Time (CST) covers all of mainland China, 8 hours ahead of UTC.

Countries in CST

ChinaHong KongMacauTaiwan

Major Cities in CST

ShanghaiBeijingShenzhenGuangzhouChengduHong KongTaipeiWuhanHangzhouNanjing

Key Facts about CST

•China uses a single time zone despite spanning 5 geographical zones.
•In Xinjiang (western China), sunset can be as late as midnight in summer.
•China abolished daylight saving time in 1991.
•The Shanghai Stock Exchange operates on CST/Beijing Time.

Daylight Saving:No – UTC+08:00 year-round

Learn more about CST on Wikipedia

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

Understanding the -8h Gap: Beijing vs GMT

Beijing runs on China Standard Time (CST) at UTC+08:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts Beijing 8 hours behind GMT — a difference of -8h at the current offsets.

In practice, when it is 9:00 AM in Beijing it is 1:00 AM in GMT. Midnight in Beijing is 4:00 PM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Beijing to GMT time conversion table

Beijing (CST)	GMT (GMT)	Day
12:00 AM	4:00 PM	previous day
6:00 AM	10:00 PM	previous day
7:00 AM	11:00 PM	previous day
8:00 AM	12:00 AM	same day
9:00 AM	1:00 AM	same day
12:00 PM	4:00 AM	same day
3:00 PM	7:00 AM	same day
5:00 PM	9:00 AM	same day
6:00 PM	10:00 AM	same day
9:00 PM	1:00 PM	same day

Why people convert Beijing to GMT time

Scheduling a call from Beijing to GMT: a 10:00 AM start in Beijing lands at 2:00 AM in GMT, so you can confirm the slot without doing the arithmetic yourself.
Handling a -8h gap: Beijing and GMT have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in GMT is 1:00 AM in Beijing.
Watching a live event or market open: Beijing viewers need 1:00 AM in GMT to catch a 9:00 AM start there, and 8:00 AM if the event is anchored to Beijing.

Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a -8h gap is not.
With a -8h gap there is no shared 9-to-5 window, so alternate the early start: one week Beijing takes the early slot, the next week GMT does.

About CST (China Standard Time)

China Standard Time (CST, also known as Beijing Time) is used across all of mainland China despite the country spanning five geographical time zones. This single-timezone policy was adopted in 1949. China does not observe daylight saving time. CST is shared with Hong Kong (HKT), Macau, Taiwan, Singapore, Malaysia, and the Philippines, making UTC+08:00 one of the most used offsets in the world.

About GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Best time to call between Beijing and GMT

With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. GMT opens at 9:00 AM GMT, which is 1:00 AM in Beijing, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Beijing and GMT have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Beijing is 8 hours behind GMT (CST UTC+08:00 → GMT UTC+00:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Beijing

Does not observe DST

GMT

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Beijing and GMT?

Beijing (CST, UTC+08:00) is 8 hours behind GMT (GMT, UTC+00:00). The gap is currently -8h.

How do I convert Beijing time to GMT time?

Add -8h to Beijing local time. For example, 9:00 AM in Beijing is 1:00 AM in GMT.

What time is it in GMT right now?

GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -8h offset from Beijing.

What is the best time to call GMT from Beijing?

There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in Beijing, which is 5:00 AM in GMT.

Which is behind, Beijing or GMT?

Beijing is 8 hours behind GMT. When it is 12:00 PM in Beijing it is 4:00 AM in GMT.

Do Beijing and GMT use different time zones?

Beijing (China) uses CST at UTC+08:00, while GMT uses GMT at UTC+00:00. The IANA identifiers are Asia/Shanghai and Europe/London.

Does daylight saving time affect the Beijing–GMT difference?

Neither zone observes daylight saving time, so the -8h offset between Beijing and GMT is fixed all year.

Which other cities share Beijing's time zone?

CST also covers Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hong Kong, Taipei, Wuhan and 2 more.

Which countries use CST, Beijing's zone?

CST is used in China, Hong Kong, Macau, Taiwan.

Is there a day difference between Beijing and GMT?

Not normally. The -8h gap only pushes the date over the previous day.

What is the time difference between Beijing and GMT?

GMT is -8h from Beijing.

What timezone is Beijing in?

Beijing operates on its local timezone.

What timezone is GMT in?

GMT operates on its local timezone.

Which countries use CST (China Standard Time)?

CST is used in China, Hong Kong, Macau, Taiwan.

Does CST observe daylight saving time?

No, CST does not observe daylight saving time and remains at UTC+08:00 year-round.

What are some interesting facts about CST?

China uses a single time zone despite spanning 5 geographical zones. In Xinjiang (western China), sunset can be as late as midnight in summer.

Which cities are in the GMT timezone?

Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.

What is the UTC offset for GMT?

Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.

What should I know about the GMT timezone?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.