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).

WIB to CAT

-5h

WIB

WIBSOURCE

UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CAT

UTC+02:00

HH07

MM00

07:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

WIB

CAT

12:00 AM

7:00 PM-1

2:00 AM

9:00 PM-1

4:00 AM

11:00 PM-1

6:00 AM

1:00 AM

8:00 AM

3:00 AM

10:00 AM

5:00 AM

12:00 PM

7:00 AM

2:00 PM

9:00 AM

4:00 PM

11:00 AM

6:00 PM

1:00 PM

8:00 PM

3:00 PM

10:00 PM

5:00 PM

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

WIB and CAT on the World Map

The map below highlights the WIB (Western Indonesia Time) and CAT (Central Africa Time) timezone regions across the globe.

WIB Zone

→

CAT Zone

Explore all world timezones interactively →

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

CAT – Central Africa Time

UTC+02:00

Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.

Countries in CAT

ZimbabweZambiaMozambiqueMalawiRwandaBurundiDR Congo (east)

Major Cities in CAT

HarareLusakaMaputoLilongweKigali

Key Facts about CAT

•Central Africa Time is fixed at UTC+02:00 with no daylight saving.
•CAT matches South Africa Standard Time (SAST) all year.
•It is the same offset as Central European Time in winter.
•Harare is level with Johannesburg and one hour ahead of Lagos.

Daylight Saving:No – UTC+02:00 year-round

Learn more about CAT on Wikipedia

Time Conversion Guide: WIB to CAT

WIB runs on Western Indonesia Time (WIB) at UTC+07:00. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts WIB 5 hours behind CAT — a difference of -5h at the current offsets.

In practice, when it is 9:00 AM in WIB it is 4:00 AM in CAT. Midnight in WIB is 7:00 PM in CAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

WIB to CAT time conversion table

WIB (WIB)	CAT (CAT)	Day
12:00 AM	7:00 PM	previous day
6:00 AM	1:00 AM	same day
7:00 AM	2:00 AM	same day
8:00 AM	3:00 AM	same day
9:00 AM	4:00 AM	same day
12:00 PM	7:00 AM	same day
3:00 PM	10:00 AM	same day
5:00 PM	12:00 PM	same day
6:00 PM	1:00 PM	same day
9:00 PM	4:00 PM	same day

Why people convert WIB to CAT time

Scheduling a call from WIB to CAT: a 10:00 AM start in WIB lands at 5:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both WIB and CAT are inside the 9-to-5 working day between 2:00 PM and 5:00 PM WIB time (9:00 AM–12:00 PM CAT). That is roughly 3 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in WIB is 3:00 PM in CAT makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -5h gap is not.
Block 2:00 PM–5:00 PM WIB as the recurring meeting window if you work primarily from WIB and need CAT colleagues present.

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.

About CAT (Central Africa Time)

Central Africa Time (CAT) is fixed at UTC+02:00 all year across a broad belt of southern and central Africa, including Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi and the eastern Democratic Republic of the Congo. None of these countries observes daylight saving time, so CAT never shifts. It is the same offset as South Africa Standard Time (SAST) and the winter version of Central European Time, which makes CAT a convenient bridge between African, European and Middle Eastern schedules — Harare is level with Johannesburg all year and one hour ahead of Lagos.

Best time to call between WIB and CAT

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

Business hours overlap

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

WIB is 5 hours behind CAT (WIB UTC+07:00 → CAT UTC+02:00). The shared working window is 2:00 PM–5:00 PM WIB. Remember to re-check around daylight-saving transitions.