WIB to AEDT
+4hWIB
WIBSOURCEAEDT
AEDTGreen 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 – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •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.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •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.
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:
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.
What is the best time to call AEDT from WIB?
Call between 9:00 AM and 1:00 PM WIB — that maps to 1:00 PM–5:00 PM AEDT and keeps both parties inside the working day.
Which is ahead, WIB or AEDT?
WIB is 4 hours ahead of AEDT. When it is 12:00 PM in WIB it is 4:00 PM in AEDT.
Does daylight saving time affect the WIB–AEDT difference?
Neither zone observes daylight saving time, so the +4h offset between WIB and AEDT is fixed all year.
Which other cities share WIB's time zone?
WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.
Which countries use WIB, WIB's zone?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Is there a day difference between WIB and AEDT?
Not normally. The +4h gap only pushes the date over for late-evening times.
What is the time difference between WIB and AEDT?
AEDT is +4h from WIB.
What timezone is WIB in?
WIB operates on its local timezone.
What timezone is AEDT in?
AEDT operates on its local timezone.
Which countries use WIB (Western Indonesia Time)?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Does WIB observe daylight saving time?
No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting 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.
Which cities are in the AEDT timezone?
Major cities in the AEDT timezone include Sydney, Melbourne, Canberra, Hobart, Newcastle.
What is the UTC offset for AEDT?
Australian Eastern Daylight Time (AEDT) is at UTC+11:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEDT timezone?
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).
When is it midnight in WIB, what time is it in AEDT?
When it is 12:00 AM (midnight) in WIB (WIB), it is +4h later in AEDT (AEDT).
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