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 WIB

-1h

SGT

SGTSOURCE

UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

WIB

UTC+07:00

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

SGT

WIB

12:00 AM

11:00 PM-1

2:00 AM

1:00 AM

4:00 AM

3:00 AM

6:00 AM

5:00 AM

8:00 AM

7:00 AM

10:00 AM

9:00 AM

12:00 PM

11:00 AM

2:00 PM

1:00 PM

4:00 PM

3:00 PM

6:00 PM

5:00 PM

8:00 PM

7:00 PM

10:00 PM

9:00 PM

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

SGT and WIB on the World Map

The map below highlights the SGT (Singapore Standard Time) and WIB (Western Indonesia Time) timezone regions across the globe.

SGT Zone

→

WIB 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

WIB – Western Indonesia Time

UTC+07:00

Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.

Countries in WIB

Indonesia (Java, Sumatra, West Kalimantan)

Major Cities in WIB

JakartaSurabayaBandungMedanPalembang

Key Facts about WIB

•Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
•Indonesia has not observed daylight saving time since 1964.
•Jakarta is the largest city in Southeast Asia by population.
•WIB shares the UTC+07:00 offset with Indochina Time.

Daylight Saving:No – UTC+07:00 year-round

Learn more about WIB on Wikipedia

SGT vs WIB: Offsets, DST and Best Call Times

SGT runs on Singapore Standard Time (SGT) at UTC+08:00. WIB runs on Western Indonesia Time (WIB) at UTC+07:00. That puts SGT 1 hour behind WIB — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in SGT it is 8:00 AM in WIB. Midnight in SGT is 11:00 PM in WIB. Neither zone observes daylight saving time, so the offset between them stays constant all year.

SGT to WIB time conversion table

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

Why people convert SGT to WIB time

Scheduling a call from SGT to WIB: a 10:00 AM start in SGT lands at 9:00 AM in WIB, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both SGT and WIB are inside the 9-to-5 working day between 10:00 AM and 5:00 PM SGT time (9:00 AM–4:00 PM WIB). That is roughly 7 hours of usable overlap.
Watching a live event or market open: SGT viewers need 8:00 AM in WIB to catch a 9:00 AM start there, and 1:00 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 -1h gap is not.
Block 10:00 AM–5:00 PM SGT as the recurring meeting window if you work primarily from SGT and need WIB 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 WIB (Western Indonesia Time)

Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.

Best time to call between SGT and WIB

Both SGT and WIB sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM SGT, which is 9:00 AM–4:00 PM WIB. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

SGT and WIB share 7 hours of working-hours overlap (10:00 AM–5:00 PM SGT), so scheduling a live meeting is straightforward.

SGT is 1 hour behind WIB (SGT UTC+08:00 → WIB UTC+07:00). The shared working window is 10:00 AM–5:00 PM SGT. Remember to re-check around daylight-saving transitions.