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HAC
Heure Avancée du Centre
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HAC is not used on this date
This converter keeps HAC at GMT -5. Chicago uses CST (GMT -6) on this date. Open the CST converter, or choose Mexico City, Chicago, or Houston for city-specific time.
PT
Pacific Time
GMT -8
12am
3am
6am
9am
12pm
3pm
6pm
9pm

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

How the time difference changes

For most of the year, HAC is 2 hours ahead of PT. At other times of the year, HAC is 3 hours ahead of PT.

For most of the year, working hours of 9:00 am to 5:00 pm in HAC correspond to 7:00 am to 3:00 pm in PT. At other times of the year, working hours of 9:00 am to 5:00 pm in HAC correspond to 6:00 am to 2:00 pm in PT.

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

Time Difference

Heure Avancée du Centre is 3 hours ahead of Pacific Time
7:00 am07:00 in HAC is 4:00 am04:00 in PT

HAC to PT call time
Best time for a conference call or a meeting is between 12pm-5pm in HAC which corresponds to 9am-2pm in PT

7:00 am07:00 Heure Avancée du Centre (HAC). Offset UTC -5:00 hours
4:00 am04:00 Pacific Time (PT). Offset UTC -8:00 hours

7:00 am07:00 HAC / 4:00 am04:00 PT

HACPT
12am (midnight)9pm
1am10pm
2am11pm
3am12am (midnight)
4am1am
5am2am
6am3am
7am4am
8am5am
9am6am
10am7am
11am8am
12pm (noon)9am
1pm10am
2pm11am
3pm12pm (noon)
4pm1pm
5pm2pm
6pm3pm
7pm4pm
8pm5pm
9pm6pm
10pm7pm
11pm8pm
00:0021:00
01:0022:00
02:0023:00
03:0000:00
04:0001:00
05:0002:00
06:0003:00
07:0004:00
08:0005:00
09:0006:00
10:0007:00
11:0008:00
12:0009:00
13:0010:00
14:0011:00
15:0012:00
16:0013:00
17:0014:00
18:0015:00
19:0016:00
20:0017:00
21:0018:00
22:0019:00
23:0020:00

Heure Avancée du Centre

Offset: HAC is 5 hours behind Greenwich Mean Time (GMT) and is used in America

Countries using this time zone: Cuba

Principal Cities: The largest city in the HAC time zone is Havana in Cuba, with about 2.164 million people. Other major cities in this time zone include Santiago de Cuba, Camaguey, Holguin, Guantanamo.

Daylight Saving: Heure Avancée du Centre (HAC) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Central Standard Time (CST).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Heure Avancée du Centre (HAC) 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: Heure Avancée du Centre (HAC) 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

HAC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for HAC
  • R - short form of 'Romeo'
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

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