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).

SGT to GST

-4h

SGT

SGTSOURCE

UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

GST

UTC+04:00

HH08

MM00

08:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

SGT

GST

12:00 AM

8:00 PM-1

2:00 AM

10:00 PM-1

4:00 AM

12:00 AM

6:00 AM

2:00 AM

8:00 AM

4:00 AM

10:00 AM

6:00 AM

12:00 PM

8:00 AM

2:00 PM

10:00 AM

4:00 PM

12:00 PM

6:00 PM

2:00 PM

8:00 PM

4:00 PM

10:00 PM

6:00 PM

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

SGT and GST on the World Map

The map below highlights the SGT (Singapore Standard Time) and GST (Gulf Standard Time) timezone regions across the globe.

SGT Zone

→

GST Zone

Explore all world timezones interactively →

SGT – Singapore Standard Time

UTC+08:00

Singapore Standard Time (SGT) is the time zone for Singapore, 8 hours ahead of UTC.

Countries in SGT

Singapore

Major Cities in SGT

Singapore

Key Facts about SGT

•Singapore uses UTC+08:00 despite being at about 104°E longitude (closer to UTC+07:00).
•Singapore does not observe daylight saving time.
•The Singapore Exchange (SGX) operates on SGT.

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

Learn more about SGT on Wikipedia

GST – Gulf Standard Time

UTC+04:00

Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.

Countries in GST

UAEOmanGeorgiaAzerbaijanMauritius

Major Cities in GST

DubaiAbu DhabiMuscatBakuTbilisi

Key Facts about GST

•Dubai uses GST year-round with no daylight saving time.
•GST is 9 hours ahead of EST and 4 hours ahead of GMT.
•The Dubai Financial Market (DFM) operates on GST.

Daylight Saving:No – UTC+04:00 year-round

Learn more about GST on Wikipedia

Time Conversion Guide: SGT to GST

SGT runs on Singapore Standard Time (SGT) at UTC+08:00. GST runs on Gulf Standard Time (GST) at UTC+04:00. That puts SGT 4 hours behind GST — a difference of -4h at the current offsets.

In practice, when it is 9:00 AM in SGT it is 5:00 AM in GST. Midnight in SGT is 8:00 PM in GST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

SGT to GST time conversion table

SGT (SGT)	GST (GST)	Day
12:00 AM	8:00 PM	previous day
6:00 AM	2:00 AM	same day
7:00 AM	3:00 AM	same day
8:00 AM	4:00 AM	same day
9:00 AM	5:00 AM	same day
12:00 PM	8:00 AM	same day
3:00 PM	11:00 AM	same day
5:00 PM	1:00 PM	same day
6:00 PM	2:00 PM	same day
9:00 PM	5:00 PM	same day

Why people convert SGT to GST time

Scheduling a call from SGT to GST: a 10:00 AM start in SGT lands at 6:00 AM in GST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both SGT and GST are inside the 9-to-5 working day between 1:00 PM and 5:00 PM SGT time (9:00 AM–1:00 PM GST). That is roughly 4 hours of usable overlap.
Watching a live event or market open: SGT viewers need 5:00 AM in GST to catch a 9:00 AM start there, and 4:00 AM if the event is anchored to SGT.

Always state the zone abbreviation, not just the hour. "3:00 PM SGT" is unambiguous; "3 PM" across a -4h gap is not.
Block 1:00 PM–5:00 PM SGT as the recurring meeting window if you work primarily from SGT and need GST colleagues present.

About SGT (Singapore Standard Time)

Singapore Standard Time (SGT) is used in Singapore year-round. Singapore does not observe daylight saving time. Despite being geographically close to the UTC+07:00 zone, Singapore uses UTC+08:00 to align with major trading partners like China, Hong Kong, and Malaysia. Singapore is a major global financial hub.

About GST (Gulf Standard Time)

Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.

Best time to call between SGT and GST

Both SGT and GST sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM SGT, which is 9:00 AM–1:00 PM GST. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

SGT and GST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

SGT is 4 hours behind GST (SGT UTC+08:00 → GST UTC+04:00). The shared working window is 1:00 PM–5:00 PM SGT. Remember to re-check around daylight-saving transitions.