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PST/PDT
Pacific Standard Time
GMT -8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PDT is not used on this date
This converter uses PST (GMT -8), the offset Los Angeles uses on this date. Open the PST converter.
Y
Yankee Time Zone
GMT -12
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

For most of the year, PDT is 5 hours ahead of Y. During seasonal clock changes, PST is 4 hours ahead of Y.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 4:00 am to 12:00 pm in Y. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in PST correspond to 5:00 am to 1:00 pm in Y.

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

Time Difference

Pacific Standard Time is 4 hours ahead of Yankee Time Zone
4:00 am04:00 in PST is 12:00 am00:00 in Y

PST to Y call time
Best time for a conference call or a meeting is between 1pm-5pm in PST which corresponds to 9am-1pm in Y

4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
12:00 am00:00 Yankee Time Zone (Y). Offset UTC -12:00 hours

4:00 am04:00 PST / 12:00 am00:00 Y

PSTY
12am (midnight)8pm
1am9pm
2am10pm
3am11pm
4am12am (midnight)
5am1am
6am2am
7am3am
8am4am
9am5am
10am6am
11am7am
12pm (noon)8am
1pm9am
2pm10am
3pm11am
4pm12pm (noon)
5pm1pm
6pm2pm
7pm3pm
8pm4pm
9pm5pm
10pm6pm
11pm7pm
00:0020:00
01:0021:00
02:0022:00
03:0023:00
04:0000:00
05:0001:00
06:0002:00
07:0003:00
08:0004:00
09:0005:00
10:0006:00
11:0007:00
12:0008:00
13:0009:00
14:0010:00
15:0011:00
16:0012:00
17:0013:00
18:0014:00
19:0015:00
20:0016:00
21:0017:00
22:0018:00
23:0019:00

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT) and is used in North America

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

Principal Cities: The largest city in the PDT 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: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

PDT Time Zone Geo Map
PDT timezone map

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

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Pacific Daylight Time (PDT) ended on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November

Daylight saving time clock moves back for one hour from 2am to 1amStart: Pacific Daylight Time (PDT) starts on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am. Daylight saving starts annually on the second Sunday of March

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

Yankee Time Zone

Offset: Y is 12 hours behind Greenwich Mean Time (GMT) and is used in Military

Daylight Saving: Clocks in Yankee Time Zone (Y) do not change for daylight saving time, so Y stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

Y representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -12 - basic short
  • -1200 - basic
  • -12:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -1200 - sign character (-) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates an offset of twelve hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Yankee - Military abbreviation for Y
  • Y - short form of 'Yankee'