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 AEDT

+4h

WIB

WIBSOURCE

UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

AEDT

UTC+10:00DST observed

HH04

MM00

16:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

WIB

AEDT

12:00 AM

3:00 AM

2:00 AM

5:00 AM

4:00 AM

7:00 AM

6:00 AM

9:00 AM

8:00 AM

11:00 AM

10:00 AM

1:00 PM

12:00 PM

3:00 PM

2:00 PM

5:00 PM

4:00 PM

7:00 PM

6:00 PM

9:00 PM

8:00 PM

11:00 PM

10:00 PM

1:00 AM+1

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

WIB and AEDT on the World Map

The map below highlights the WIB (Western Indonesia Time) and AEDT (Australian Eastern Daylight Time) timezone regions across the globe.

WIB Zone

→

AEDT 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

AEDT – Australian Eastern Daylight Time

UTC+11:00

Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.

Countries in AEDT

Australia (NSW, Victoria, Tasmania, ACT)

Major Cities in AEDT

SydneyMelbourneCanberraHobartNewcastle

Key Facts about AEDT

•AEDT runs from the first Sunday in October to the first Sunday in April.
•AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
•Queensland does not observe daylight saving, so Brisbane stays on AEST.
•During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.

Daylight Saving:Yes – switches to AEDT

Learn more about AEDT on Wikipedia

WIB vs AEDT: Offsets, DST and Best Call Times

WIB runs on Western Indonesia Time (WIB) at UTC+07:00. AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. That puts WIB 4 hours ahead of AEDT — a difference of +4h at the current offsets.

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

WIB to AEDT time conversion table

WIB (WIB)	AEDT (AEDT)	Day
12:00 AM	4:00 AM	same day
6:00 AM	10:00 AM	same day
7:00 AM	11:00 AM	same day
8:00 AM	12:00 PM	same day
9:00 AM	1:00 PM	same day
12:00 PM	4:00 PM	same day
3:00 PM	7:00 PM	same day
5:00 PM	9:00 PM	same day
6:00 PM	10:00 PM	same day
9:00 PM	1:00 AM	next day

Why people convert WIB to AEDT time

Scheduling a call from WIB to AEDT: a 10:00 AM start in WIB lands at 2:00 PM in AEDT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both WIB and AEDT are inside the 9-to-5 working day between 9:00 AM and 1:00 PM WIB time (1:00 PM–5:00 PM AEDT). That is roughly 4 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in WIB is 12:00 AM in AEDT 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 +4h gap is not.
Block 9:00 AM–1:00 PM WIB as the recurring meeting window if you work primarily from WIB and need AEDT 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 AEDT (Australian Eastern Daylight Time)

Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.

Best time to call between WIB and AEDT

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

Business hours overlap

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

WIB is 4 hours ahead of AEDT (WIB UTC+07:00 → AEDT UTC+11:00). The shared working window is 9:00 AM–1:00 PM WIB. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

WIB

Does not observe DST

AEDT

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 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 WIB and AEDT?

WIB (WIB, UTC+07:00) is 4 hours ahead of AEDT (AEDT, UTC+11:00). The gap is currently +4h.

How do I convert WIB time to AEDT time?

Add +4h to WIB local time. For example, 9:00 AM in WIB is 1:00 PM in AEDT.

What time is it in AEDT right now?

AEDT uses AEDT at UTC+11:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +4h offset from WIB.