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).

TRT to SGT

+5h

TRT

TRTSOURCE

UTC+03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

SGT

UTC+08:00

HH05

MM00

17:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

TRT

SGT

12:00 AM

5:00 AM

2:00 AM

7:00 AM

4:00 AM

9:00 AM

6:00 AM

11:00 AM

8:00 AM

1:00 PM

10:00 AM

3:00 PM

12:00 PM

5:00 PM

2:00 PM

7:00 PM

4:00 PM

9:00 PM

6:00 PM

11:00 PM

8:00 PM

1:00 AM+1

10:00 PM

3:00 AM+1

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

TRT and SGT on the World Map

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

TRT Zone

→

SGT Zone

Explore all world timezones interactively →

TRT – Turkey Time

UTC+03:00

Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.

Countries in TRT

Turkey

Major Cities in TRT

IstanbulAnkaraIzmirBursaAntalya

Key Facts about TRT

•Turkey has used a permanent UTC+03:00 since September 2016.
•TRT is level with Moscow Standard Time and Arabia Standard Time all year.
•Because Turkey kept summer time permanently, western cities see very late winter sunrises.
•Turkey previously observed daylight saving time from 1973 to 2016.

Daylight Saving:No – UTC+03:00 year-round

Learn more about TRT on Wikipedia

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

Understanding the +5h Gap: TRT vs SGT

TRT runs on Turkey Time (TRT) at UTC+03:00. SGT runs on Singapore Standard Time (SGT) at UTC+08:00. That puts TRT 5 hours ahead of SGT — a difference of +5h at the current offsets.

In practice, when it is 9:00 AM in TRT it is 2:00 PM in SGT. Midnight in TRT is 5:00 AM in SGT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

TRT to SGT time conversion table

TRT (TRT)	SGT (SGT)	Day
12:00 AM	5:00 AM	same day
6:00 AM	11:00 AM	same day
7:00 AM	12:00 PM	same day
8:00 AM	1:00 PM	same day
9:00 AM	2:00 PM	same day
12:00 PM	5:00 PM	same day
3:00 PM	8:00 PM	same day
5:00 PM	10:00 PM	same day
6:00 PM	11:00 PM	same day
9:00 PM	2:00 AM	next day

Why people convert TRT to SGT time

Scheduling a call from TRT to SGT: a 10:00 AM start in TRT lands at 3:00 PM in SGT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both TRT and SGT are inside the 9-to-5 working day between 9:00 AM and 12:00 PM TRT time (2:00 PM–5:00 PM SGT). That is roughly 3 hours of usable overlap.
Watching a live event or market open: TRT viewers need 2:00 PM in SGT to catch a 9:00 AM start there, and 7:00 PM if the event is anchored to TRT.

Always state the zone abbreviation, not just the hour. "3:00 PM TRT" is unambiguous; "3 PM" across a +5h gap is not.
Block 9:00 AM–12:00 PM TRT as the recurring meeting window if you work primarily from TRT and need SGT colleagues present.

About TRT (Turkey Time)

Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.

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.

Best time to call between TRT and SGT

Both TRT and SGT sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM TRT, which is 2:00 PM–5:00 PM SGT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

TRT and SGT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

TRT is 5 hours ahead of SGT (TRT UTC+03:00 → SGT UTC+08:00). The shared working window is 9:00 AM–12:00 PM TRT. Remember to re-check around daylight-saving transitions.