Offset
The time difference between Hong Kong Time and Atlantic Time is 11 hours.
Hong Kong Time (HKT) is ahead of Atlantic Time (ADT).
HKT: UTC+8
ADT: UTC-3
Atlantic Time is currently observing daylight saving time; Hong Kong Time is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Hong Kong Time and Atlantic Time don't overlap on the same weekday. Atlantic Time is 11 hours behind Hong Kong Time.
With some flexibility, there’s a workable window outside standard hours:
- 6 PM–8 PM in Hong Kong Time (7 AM–9 AM in Atlantic Time) — suggest 7:00 PM Hong Kong 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.
Hong Kong
- New Year's DayThu, Jan 1
- Lunar New YearTue, Feb 17
- Second day of Lunar New YearWed, Feb 18
- Third day of Lunar New YearThu, Feb 19
- Good FridayFri, Apr 3
- Holy SaturdaySat, Apr 4
- Ching Ming FestivalSat, Apr 4
- Easter MondayMon, Apr 6
- Labour DayFri, May 1
- Buddha's BirthdayMon, May 25
- Dragon Boat FestivalFri, Jun 19
- Hong Kong Special Administrative Region Establishment DayWed, Jul 1
- Day following the Mid-Autumn FestivalSat, Sep 26
- National DayThu, Oct 1
- Chung Yeung FestivalMon, Oct 19
- Christmas DayFri, Dec 25
- Boxing DaySat, Dec 26
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
Hong Kong Time is also known as HKT. To call Hong Kong, dial +852.
Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.
Atlantic Time is approximately 7,800 miles north of Hong Kong Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| HKT | AST-ATLANTIC | Day |
|---|---|---|
| 12:00 am | 1:00 pm | -1 day |
| 1:00 am | 2:00 pm | -1 day |
| 2:00 am | 3:00 pm | -1 day |
| 3:00 am | 4:00 pm | -1 day |
| 4:00 am | 5:00 pm | -1 day |
| 5:00 am | 6:00 pm | -1 day |
| 6:00 am | 7:00 pm | -1 day |
| 7:00 am | 8:00 pm | -1 day |
| 8:00 am | 9:00 pm | -1 day |
| 9:00 am | 10:00 pm | -1 day |
| 10:00 am | 11:00 pm | -1 day |
| 11:00 am | 12:00 am | Same day |
| 12:00 pm | 1:00 am | Same day |
| 1:00 pm | 2:00 am | Same day |
| 2:00 pm | 3:00 am | Same day |
| 3:00 pm | 4:00 am | Same day |
| 4:00 pm | 5:00 am | Same day |
| 5:00 pm | 6:00 am | Same day |
| 6:00 pm | 7:00 am | Same day |
| 7:00 pm | 8:00 am | Same day |
| 8:00 pm | 9:00 am | Same day |
| 9:00 pm | 10:00 am | Same day |
| 10:00 pm | 11:00 am | Same day |
| 11:00 pm | 12:00 pm | Same day |
Daylight saving time
Atlantic Time observes daylight saving time; Hong Kong 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
- 5:40 AM
- Sunset
- 7:06 PM
- Day length
- 13h 26m
- Sunrise
- 5:31 AM
- Sunset
- 8:56 PM
- Day length
- 15h 25m
Daylight overlap: 2h 34m — 4:31 PM–7:06 PM in Hong Kong Time (5:31 AM–8:06 AM in Atlantic Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Hong Kong Time
Cities in Atlantic Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Hong Kong Time
- HKG
Airports in Atlantic Time
- YHZ
Related conversions
Common conversions
- What is 9:00 am HKT in AST-ATLANTIC?
- 9:00 am HKT is 10:00 pm AST-ATLANTIC, the previous day.
- What is 12:00 pm HKT in AST-ATLANTIC?
- 12:00 pm HKT is 1:00 am AST-ATLANTIC.
- What is 12:30 pm HKT in AST-ATLANTIC?
- 12:30 pm HKT is 1:30 am AST-ATLANTIC.
- What is 2:00 pm HKT in AST-ATLANTIC?
- 2:00 pm HKT is 3:00 am AST-ATLANTIC.
- What is 5:00 pm HKT in AST-ATLANTIC?
- 5:00 pm HKT is 6:00 am AST-ATLANTIC.
- What is 11:30 pm HKT in AST-ATLANTIC?
- 11:30 pm HKT is 12:30 pm AST-ATLANTIC.