World Timezones

CAT to AST-ATLANTIC Converter

Compare AST-ATLANTIC to CAT instead
Central Africa Time6:35 amFri, Jun 5
Central Africa TimeCAT
Africa · UTC+2
6:35 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
Atlantic TimeADT
North America · UTC-3
1:35 amFri, Jun 5
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p

Offset

The time difference between Central Africa Time and Atlantic Time is 5 hours.

5 hours

Central Africa Time (CAT) is ahead of Atlantic Time (ADT).

CAT: UTC+2

ADT: UTC-3

Atlantic Time is currently observing daylight saving time; Central Africa Time is not.

When to schedule

Business-hours overlap: 2 PM–5 PM in Central Africa Time (9 AM–12 PM in Atlantic Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 3:00 PM Central Africa Time (10:00 AM Atlantic 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.

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

Central Africa Time is also known as CAT. To call Zambia, dial +260.

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

Atlantic Time is approximately 7,300 miles northwest of Central Africa Time.

Quick reference

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

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

Daylight saving time

Atlantic Time observes daylight saving time; Central Africa 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

Central Africa Time
Sunrise
6:22 AM
Sunset
5:28 PM
Day length
11h 6m
Atlantic Time
Sunrise
5:31 AM
Sunset
8:56 PM
Day length
15h 25m

Daylight overlap: 6h 57m — 10:31 AM–5:28 PM in Central Africa Time (5:31 AM–12:28 PM in Atlantic Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Central Africa Time

Cities in Atlantic Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Central Africa Time

  • HRE

Airports in Atlantic Time

  • YHZ

Related conversions

Common conversions

What is 9:00 am CAT in AST-ATLANTIC?
9:00 am CAT is 4:00 am AST-ATLANTIC.
What is 12:00 pm CAT in AST-ATLANTIC?
12:00 pm CAT is 7:00 am AST-ATLANTIC.
What is 12:30 pm CAT in AST-ATLANTIC?
12:30 pm CAT is 7:30 am AST-ATLANTIC.
What is 2:00 pm CAT in AST-ATLANTIC?
2:00 pm CAT is 9:00 am AST-ATLANTIC.
What is 5:00 pm CAT in AST-ATLANTIC?
5:00 pm CAT is 12:00 pm AST-ATLANTIC.
What is 11:30 pm CAT in AST-ATLANTIC?
11:30 pm CAT is 6:30 pm AST-ATLANTIC.