World Timezones

PST to AST-ATLANTIC Converter

Compare AST-ATLANTIC to PST instead
Pacific Time9:35 pmThu, Jun 4
Pacific TimePDT
North America · UTC-7
9:35 pmThu, Jun 4
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
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a

Offset

The time difference between Pacific Time and Atlantic Time is 4 hours.

4 hours

Pacific Time (PDT) is behind Atlantic Time (ADT).

PDT: UTC-7

ADT: UTC-3

Both zones are currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–1 PM in Pacific Time (1 PM–5 PM in Atlantic Time).

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

Suggested time: 11:00 AM Pacific Time (3:00 PM 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.

United States

  • New Year's DayThu, Jan 1
  • Martin Luther King, Jr. DayMon, Jan 19
  • Presidents DayMon, Feb 16
  • Memorial DayMon, May 25
  • Juneteenth National Independence DayFri, Jun 19
  • Independence DayFri, Jul 3
  • Labour DayMon, Sep 7
  • Columbus DayMon, Oct 12
  • Veterans DayWed, Nov 11
  • Thanksgiving DayThu, Nov 26
  • 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

Pacific Time is also known as PST, or PDT. To call United States, dial +1.

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

Atlantic Time is approximately 2,950 miles northeast of Pacific Time.

Quick reference

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

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

Daylight saving time

Both Pacific Time and Atlantic Time observe daylight saving time and transition on the same date.

Next transition: Sunday, November 1, 2026 (fall back).

Because they transition simultaneously, the offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Pacific Time
Sunrise
5:43 AM
Sunset
8:02 PM
Day length
14h 19m
Atlantic Time
Sunrise
5:31 AM
Sunset
8:56 PM
Day length
15h 25m

Cities in these zones

Cities in Atlantic Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Pacific Time

  • BUR
  • HHR
  • LAX
  • LGB
  • SNA
  • CLD
  • SAN
  • TIJ
  • OAK
  • SFO

Airports in Atlantic Time

  • YHZ

Related conversions

Common conversions

What is 9:00 am PST in AST-ATLANTIC?
9:00 am PST is 1:00 pm AST-ATLANTIC.
What is 12:00 pm PST in AST-ATLANTIC?
12:00 pm PST is 4:00 pm AST-ATLANTIC.
What is 12:30 pm PST in AST-ATLANTIC?
12:30 pm PST is 4:30 pm AST-ATLANTIC.
What is 2:00 pm PST in AST-ATLANTIC?
2:00 pm PST is 6:00 pm AST-ATLANTIC.
What is 5:00 pm PST in AST-ATLANTIC?
5:00 pm PST is 9:00 pm AST-ATLANTIC.
What is 11:30 pm PST in AST-ATLANTIC?
11:30 pm PST is 3:30 am AST-ATLANTIC, the next day.