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PT
Pacific Time
GMT -8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IRST/IRDT
Iran Standard Time
GMT +3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IRDT is not used on this date
This converter uses IRST (GMT +3:30), the offset Tehran uses on this date. Open the IRST converter.

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Selected conversion

The selected date and time will appear here when the converter loads.

How the time difference changes

For most of the year, PT is 10 hours and 30 minutes behind IRST. At other times of the year, PT is 11 hours and 30 minutes behind IRST.

For most of the year, working hours of 9:00 am to 5:00 pm in PT correspond to 7:30 pm to 3:30 am (next day) in IRST. At other times of the year, working hours of 9:00 am to 5:00 pm in PT correspond to 8:30 pm to 4:30 am (next day) in IRST.

Compare PT time with IRDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Pacific Time is 11 hours and 30 minutes behind Iran Standard Time
4:00 am04:00 in PT is 3:30 pm15:30 in IRST

PT to IRST call time
Best time for a conference call or a meeting is between 7am-8am in PT which corresponds to 6:30pm-7:30pm in IRST

4:00 am04:00 Pacific Time (PT). Offset UTC -8:00 hours
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours

4:00 am04:00 PT / 3:30 pm15:30 IRST

PTIRST
12am (midnight)11:30 am
1am12:30 pm
2am1:30 pm
3am2:30 pm
4am3:30 pm
5am4:30 pm
6am5:30 pm
7am6:30 pm
8am7:30 pm
9am8:30 pm
10am9:30 pm
11am10:30 pm
12pm (noon)11:30 pm
1pm12:30 am
2pm1:30 am
3pm2:30 am
4pm3:30 am
5pm4:30 am
6pm5:30 am
7pm6:30 am
8pm7:30 am
9pm8:30 am
10pm9:30 am
11pm10:30 am
00:0011:30
01:0012:30
02:0013:30
03:0014:30
04:0015:30
05:0016:30
06:0017:30
07:0018:30
08:0019:30
09:0020:30
10:0021:30
11:0022:30
12:0023:30
13:0000:30
14:0001:30
15:0002:30
16:0003:30
17:0004:30
18:0005:30
19:0006:30
20:0007:30
21:0008:30
22:0009:30
23:0010:30

Pacific Time

Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.

Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.

Countries using this time zone: Canada, Mexico, United States.

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, San Jose.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

PT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PT
  • U - short form of 'Uniform'
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone

Iran Daylight Time

Offset: IRDT is 4 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

IRDT Time Zone Geo Map
IRDT timezone map

IRDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0430 - basic
  • +04:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
Time zones with the GMT +4:30 offset:
  • AFT - Afghanistan Time
  • IRDT - Iran Daylight Time