Updating current time…
PDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
U
UTC−8
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:00 am05:00 PDT (UTC-7), Oct 18, 2026 = 4:00 am04:00 U (UTC-8), Oct 18, 2026

PDT is 1 hour ahead of U.

PDT and U examples

These examples always use PDT (UTC-7) and U (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

PDT is 1 hour ahead of U.

How the time difference changes

For most of the year, PDT is 1 hour ahead of U. From Nov 1, 2026 to Mar 14, 2027, PST and U have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 8:00 am to 5:00 pm in U. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 9:00 am to 6:00 pm in U.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 08:00 to 17:00 in U. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 09:00 to 18:00 in U.

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

Time Difference

Pacific Daylight Time is 1 hour ahead of Uniform Time Zone.
5:00 am05:00 in PDT is 4:00 am04:00 in U

PDT to U call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in PDT which corresponds to 9am-5pm09:00-17:00 in U

5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:00 am04:00 Uniform Time Zone (U). Offset UTC -8:00 hours

5:00 am05:00 PDT / 4:00 am04:00 U

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
PDTU
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Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Map of the areas on Pacific Daylight Time (PDT)
PDT part of the year

Today all shaded areas are on PDT.

Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Pacific Standard Time (PST).

123456789101112Start: Pacific Daylight Time (PDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Pacific Daylight Time (PDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

PDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for PDT
  • T - short form of 'Tango'
IANA/Olson: Reflects PDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

Uniform Time Zone

Offset: U is 8 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, Pitcairn, United States

Principal Cities: The largest city in the U time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

Daylight Saving: Some places on Uniform Time Zone (U) keep the same time all year, while others use U for only part of the year and change their clocks for daylight saving time; see upcoming clock changes worldwide.

Map of the areas on Uniform Time Zone (U)
U part of the year

Today some of the shaded areas are on UTC−7 (PDT).

U 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 U
  • 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