Offset
The time difference between Atlantic Time and Western Indonesia Time is 10 hours.
Atlantic Time (ADT) is behind Western Indonesia Time (WIB).
ADT: UTC-3
WIB: UTC+7
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 Atlantic Time and Western Indonesia Time don't overlap on the same weekday. Western Indonesia Time is 10 hours ahead of Atlantic Time.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–10 AM in Atlantic Time (5 PM–8 PM in Western Indonesia Time) — suggest 8:00 AM Atlantic Time (6:00 PM Western Indonesia 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.
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
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
About these zones
Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.
Western Indonesia Time is also known as WIB. To call Indonesia, dial +62.
Western Indonesia Time is approximately 9,700 miles north of Atlantic Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| AST-ATLANTIC | WIB | Day |
|---|---|---|
| 12:00 am | 10:00 am | Same day |
| 1:00 am | 11:00 am | Same day |
| 2:00 am | 12:00 pm | Same day |
| 3:00 am | 1:00 pm | Same day |
| 4:00 am | 2:00 pm | Same day |
| 5:00 am | 3:00 pm | Same day |
| 6:00 am | 4:00 pm | Same day |
| 7:00 am | 5:00 pm | Same day |
| 8:00 am | 6:00 pm | Same day |
| 9:00 am | 7:00 pm | Same day |
| 10:00 am | 8:00 pm | Same day |
| 11:00 am | 9:00 pm | Same day |
| 12:00 pm | 10:00 pm | Same day |
| 1:00 pm | 11:00 pm | Same day |
| 2:00 pm | 12:00 am | +1 day |
| 3:00 pm | 1:00 am | +1 day |
| 4:00 pm | 2:00 am | +1 day |
| 5:00 pm | 3:00 am | +1 day |
| 6:00 pm | 4:00 am | +1 day |
| 7:00 pm | 5:00 am | +1 day |
| 8:00 pm | 6:00 am | +1 day |
| 9:00 pm | 7:00 am | +1 day |
| 10:00 pm | 8:00 am | +1 day |
| 11:00 pm | 9:00 am | +1 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
- 5:31 AM
- Sunset
- 8:56 PM
- Day length
- 15h 25m
- Sunrise
- 5:59 AM
- Sunset
- 5:45 PM
- Day length
- 11h 47m
Daylight overlap: 2h 14m — 5:31 AM–7:45 AM in Atlantic Time (3:31 PM–5:45 PM in Western Indonesia Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Atlantic Time
Cities in Western Indonesia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Atlantic Time
- YHZ
Airports in Western Indonesia Time
- CGK
- HLP
- SUB
- BDO
- KNO
- PLM
- SRG
Related conversions
Common conversions
- What is 9:00 am AST-ATLANTIC in WIB?
- 9:00 am AST-ATLANTIC is 7:00 pm WIB.
- What is 12:00 pm AST-ATLANTIC in WIB?
- 12:00 pm AST-ATLANTIC is 10:00 pm WIB.
- What is 12:30 pm AST-ATLANTIC in WIB?
- 12:30 pm AST-ATLANTIC is 10:30 pm WIB.
- What is 2:00 pm AST-ATLANTIC in WIB?
- 2:00 pm AST-ATLANTIC is 12:00 am WIB, the next day.
- What is 5:00 pm AST-ATLANTIC in WIB?
- 5:00 pm AST-ATLANTIC is 3:00 am WIB, the next day.
- What is 11:30 pm AST-ATLANTIC in WIB?
- 11:30 pm AST-ATLANTIC is 9:30 am WIB, the next day.