Offset
The time difference between Western Indonesia Time and Atlantic Time is 10 hours.
Western Indonesia Time (WIB) is ahead of Atlantic Time (ADT).
WIB: UTC+7
ADT: UTC-3
Atlantic Time is currently observing daylight saving time; Western Indonesia Time is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Western Indonesia Time and Atlantic Time don't overlap on the same weekday. Atlantic Time is 10 hours behind Western Indonesia Time.
With some flexibility, there’s a workable window outside standard hours:
- 5 PM–8 PM in Western Indonesia Time (7 AM–10 AM in Atlantic Time) — suggest 6:00 PM Western Indonesia Time (8:00 AM Atlantic Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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
Canada
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Victoria DayMon, May 18
- Canada DayWed, Jul 1
- Labour DayMon, Sep 7
- National Day for Truth and ReconciliationWed, Sep 30
- ThanksgivingMon, Oct 12
- Christmas DayFri, Dec 25
About these zones
Western Indonesia Time is also known as WIB. To call Indonesia, dial +62.
Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.
Atlantic Time is approximately 9,700 miles north of Western Indonesia Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| WIB | AST-ATLANTIC | Day |
|---|---|---|
| 12:00 am | 2:00 pm | -1 day |
| 1:00 am | 3:00 pm | -1 day |
| 2:00 am | 4:00 pm | -1 day |
| 3:00 am | 5:00 pm | -1 day |
| 4:00 am | 6:00 pm | -1 day |
| 5:00 am | 7:00 pm | -1 day |
| 6:00 am | 8:00 pm | -1 day |
| 7:00 am | 9:00 pm | -1 day |
| 8:00 am | 10:00 pm | -1 day |
| 9:00 am | 11:00 pm | -1 day |
| 10:00 am | 12:00 am | Same day |
| 11:00 am | 1:00 am | Same day |
| 12:00 pm | 2:00 am | Same day |
| 1:00 pm | 3:00 am | Same day |
| 2:00 pm | 4:00 am | Same day |
| 3:00 pm | 5:00 am | Same day |
| 4:00 pm | 6:00 am | Same day |
| 5:00 pm | 7:00 am | Same day |
| 6:00 pm | 8:00 am | Same day |
| 7:00 pm | 9:00 am | Same day |
| 8:00 pm | 10:00 am | Same day |
| 9:00 pm | 11:00 am | Same day |
| 10:00 pm | 12:00 pm | Same day |
| 11:00 pm | 1:00 pm | Same day |
Daylight saving time
Atlantic Time observes daylight saving time; Western Indonesia Time does not. The offset between the two zones changes when Atlantic Time transitions: on Sunday, November 1, 2026, clocks fall back from ADT to AST.
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
- 5:31 AM
- Sunset
- 8:56 PM
- Day length
- 15h 25m
Daylight overlap: 2h 14m — 3:31 PM–5:45 PM in Western Indonesia Time (5:31 AM–7:45 AM in Atlantic Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Western Indonesia Time
Cities in Atlantic 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 Atlantic Time
- YHZ
Related conversions
Common conversions
- What is 9:00 am WIB in AST-ATLANTIC?
- 9:00 am WIB is 11:00 pm AST-ATLANTIC, the previous day.
- What is 12:00 pm WIB in AST-ATLANTIC?
- 12:00 pm WIB is 2:00 am AST-ATLANTIC.
- What is 12:30 pm WIB in AST-ATLANTIC?
- 12:30 pm WIB is 2:30 am AST-ATLANTIC.
- What is 2:00 pm WIB in AST-ATLANTIC?
- 2:00 pm WIB is 4:00 am AST-ATLANTIC.
- What is 5:00 pm WIB in AST-ATLANTIC?
- 5:00 pm WIB is 7:00 am AST-ATLANTIC.
- What is 11:30 pm WIB in AST-ATLANTIC?
- 11:30 pm WIB is 1:30 pm AST-ATLANTIC.