World Timezones

AST-ATLANTIC to ICT Converter

Compare ICT to AST-ATLANTIC instead
Atlantic Time1:35 amFri, Jun 5
Atlantic TimeADT
North America · UTC-3
1:35 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Indochina TimeICT
Asia · UTC+7
11:35 amFri, Jun 5
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a

Offset

The time difference between Atlantic Time and Indochina Time is 10 hours.

10 hours

Atlantic Time (ADT) is behind Indochina Time (ICT).

ADT: UTC-3

ICT: UTC+7

Atlantic Time is currently observing daylight saving time; Indochina Time is not.

When to schedule

Standard business hours (9 AM–5 PM, Mon–Fri) in Atlantic Time and Indochina Time don't overlap on the same weekday. Indochina 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 Indochina Time) — suggest 8:00 AM Atlantic Time (6:00 PM Indochina 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

About these zones

Atlantic Time is also known as AST, or ADT. To call Canada, dial +1.

Indochina Time is also known as ICT. To call Thailand, dial +66.

Indochina Time is approximately 8,300 miles north of Atlantic Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

AST-ATLANTICICTDay
12:00 am10:00 amSame day
1:00 am11:00 amSame day
2:00 am12:00 pmSame day
3:00 am1:00 pmSame day
4:00 am2:00 pmSame day
5:00 am3:00 pmSame day
6:00 am4:00 pmSame day
7:00 am5:00 pmSame day
8:00 am6:00 pmSame day
9:00 am7:00 pmSame day
10:00 am8:00 pmSame day
11:00 am9:00 pmSame day
12:00 pm10:00 pmSame day
1:00 pm11:00 pmSame day
2:00 pm12:00 am+1 day
3:00 pm1:00 am+1 day
4:00 pm2:00 am+1 day
5:00 pm3:00 am+1 day
6:00 pm4:00 am+1 day
7:00 pm5:00 am+1 day
8:00 pm6:00 am+1 day
9:00 pm7:00 am+1 day
10:00 pm8:00 am+1 day
11:00 pm9:00 am+1 day

Daylight saving time

Atlantic Time observes daylight saving time; Indochina 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

Atlantic Time
Sunrise
5:31 AM
Sunset
8:56 PM
Day length
15h 25m
Indochina Time
Sunrise
5:50 AM
Sunset
6:44 PM
Day length
12h 54m

Daylight overlap: 3h 13m — 5:31 AM–8:44 AM in Atlantic Time (3:31 PM–6:44 PM in Indochina Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Atlantic Time

Cities in Indochina Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Atlantic Time

  • YHZ

Airports in Indochina Time

  • HAN
  • BKK
  • DMK
  • HPH

Related conversions

Common conversions

What is 9:00 am AST-ATLANTIC in ICT?
9:00 am AST-ATLANTIC is 7:00 pm ICT.
What is 12:00 pm AST-ATLANTIC in ICT?
12:00 pm AST-ATLANTIC is 10:00 pm ICT.
What is 12:30 pm AST-ATLANTIC in ICT?
12:30 pm AST-ATLANTIC is 10:30 pm ICT.
What is 2:00 pm AST-ATLANTIC in ICT?
2:00 pm AST-ATLANTIC is 12:00 am ICT, the next day.
What is 5:00 pm AST-ATLANTIC in ICT?
5:00 pm AST-ATLANTIC is 3:00 am ICT, the next day.
What is 11:30 pm AST-ATLANTIC in ICT?
11:30 pm AST-ATLANTIC is 9:30 am ICT, the next day.