Offset
The time difference between Western Indonesia Time and Japan Standard Time is 2 hours.
Western Indonesia Time (WIB) is behind Japan Standard Time (JST).
WIB: UTC+7
JST: UTC+9
Neither Western Indonesia Time nor Japan Standard Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–3 PM in Western Indonesia Time (11 AM–5 PM in Japan Standard Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Western Indonesia Time (2:00 PM Japan Standard Time).
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Indonesia
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Labour DayFri, May 1
- Ascension DayThu, May 14
- Pancasila DayMon, Jun 1
- Independence DayMon, Aug 17
- Christmas DayFri, Dec 25
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
About these zones
Western Indonesia Time is also known as WIB. To call Indonesia, dial +62.
Japan Standard Time is also known as JST. To call Japan, dial +81.
Japan Standard Time is approximately 3,600 miles northeast of Western Indonesia Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| WIB | JST | Day |
|---|---|---|
| 12:00 am | 2:00 am | Same day |
| 1:00 am | 3:00 am | Same day |
| 2:00 am | 4:00 am | Same day |
| 3:00 am | 5:00 am | Same day |
| 4:00 am | 6:00 am | Same day |
| 5:00 am | 7:00 am | Same day |
| 6:00 am | 8:00 am | Same day |
| 7:00 am | 9:00 am | Same day |
| 8:00 am | 10:00 am | Same day |
| 9:00 am | 11:00 am | Same day |
| 10:00 am | 12:00 pm | Same day |
| 11:00 am | 1:00 pm | Same day |
| 12:00 pm | 2:00 pm | Same day |
| 1:00 pm | 3:00 pm | Same day |
| 2:00 pm | 4:00 pm | Same day |
| 3:00 pm | 5:00 pm | Same day |
| 4:00 pm | 6:00 pm | Same day |
| 5:00 pm | 7:00 pm | Same day |
| 6:00 pm | 8:00 pm | Same day |
| 7:00 pm | 9:00 pm | Same day |
| 8:00 pm | 10:00 pm | Same day |
| 9:00 pm | 11:00 pm | Same day |
| 10:00 pm | 12:00 am | +1 day |
| 11:00 pm | 1:00 am | +1 day |
Daylight saving time
Neither Western Indonesia Time nor Japan Standard Time observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:59 AM
- Sunset
- 5:45 PM
- Day length
- 11h 47m
- Sunrise
- 4:27 AM
- Sunset
- 6:55 PM
- Day length
- 14h 28m
Daylight overlap: 10h 56m — 5:59 AM–4:55 PM in Western Indonesia Time (7:59 AM–6:55 PM in Japan Standard Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Western Indonesia Time
Cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Western Indonesia Time
- CGK
- HLP
- SUB
- BDO
- KNO
- PLM
- SRG
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Related conversions
Common conversions
- What is 9:00 am WIB in JST?
- 9:00 am WIB is 11:00 am JST.
- What is 12:00 pm WIB in JST?
- 12:00 pm WIB is 2:00 pm JST.
- What is 12:30 pm WIB in JST?
- 12:30 pm WIB is 2:30 pm JST.
- What is 2:00 pm WIB in JST?
- 2:00 pm WIB is 4:00 pm JST.
- What is 5:00 pm WIB in JST?
- 5:00 pm WIB is 7:00 pm JST.
- What is 11:30 pm WIB in JST?
- 11:30 pm WIB is 1:30 am JST, the next day.