Offset
The time difference between Western Indonesia Time and Greenwich Mean Time is 6 hours.
Western Indonesia Time (WIB) is ahead of Greenwich Mean Time (BST).
WIB: UTC+7
BST: UTC+1
Greenwich Mean Time is currently observing daylight saving time; Western Indonesia Time is not.
When to schedule
Business-hours overlap: 3 PM–5 PM in Western Indonesia Time (9 AM–11 AM in Greenwich Mean Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Western Indonesia Time (10:00 AM Greenwich Mean Time).
This window may shift by an hour during daylight saving 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
United Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Western Indonesia Time is also known as WIB. To call Indonesia, dial +62.
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Greenwich Mean Time is approximately 7,300 miles northwest of Western Indonesia Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| WIB | GMT | Day |
|---|---|---|
| 12:00 am | 6:00 pm | -1 day |
| 1:00 am | 7:00 pm | -1 day |
| 2:00 am | 8:00 pm | -1 day |
| 3:00 am | 9:00 pm | -1 day |
| 4:00 am | 10:00 pm | -1 day |
| 5:00 am | 11:00 pm | -1 day |
| 6:00 am | 12:00 am | Same day |
| 7:00 am | 1:00 am | Same day |
| 8:00 am | 2:00 am | Same day |
| 9:00 am | 3:00 am | Same day |
| 10:00 am | 4:00 am | Same day |
| 11:00 am | 5:00 am | Same day |
| 12:00 pm | 6:00 am | Same day |
| 1:00 pm | 7:00 am | Same day |
| 2:00 pm | 8:00 am | Same day |
| 3:00 pm | 9:00 am | Same day |
| 4:00 pm | 10:00 am | Same day |
| 5:00 pm | 11:00 am | Same day |
| 6:00 pm | 12:00 pm | Same day |
| 7:00 pm | 1:00 pm | Same day |
| 8:00 pm | 2:00 pm | Same day |
| 9:00 pm | 3:00 pm | Same day |
| 10:00 pm | 4:00 pm | Same day |
| 11:00 pm | 5:00 pm | Same day |
Daylight saving time
Greenwich Mean Time observes daylight saving time; Western Indonesia Time does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
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
- 4:47 AM
- Sunset
- 9:13 PM
- Day length
- 16h 25m
Daylight overlap: 6h 58m — 10:47 AM–5:45 PM in Western Indonesia Time (4:47 AM–11:45 AM in Greenwich Mean Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Western Indonesia Time
Cities in Greenwich Mean 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 Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Related conversions
Common conversions
- What is 9:00 am WIB in GMT?
- 9:00 am WIB is 3:00 am GMT.
- What is 12:00 pm WIB in GMT?
- 12:00 pm WIB is 6:00 am GMT.
- What is 12:30 pm WIB in GMT?
- 12:30 pm WIB is 6:30 am GMT.
- What is 2:00 pm WIB in GMT?
- 2:00 pm WIB is 8:00 am GMT.
- What is 5:00 pm WIB in GMT?
- 5:00 pm WIB is 11:00 am GMT.
- What is 11:30 pm WIB in GMT?
- 11:30 pm WIB is 5:30 pm GMT.