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HAA
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CET
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:00 am09:00 HAA (UTC-3), Oct 29, 2026 = 1:00 pm13:00 CET (UTC+1), Oct 29, 2026

HAA is 4 hours behind CET.

HAA and CET examples

These examples always use HAA (UTC-3) and CET (UTC+1). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

HAA is 4 hours behind CET.

How the time difference changes

For most of the year, HAA is 5 hours behind CEST. From Oct 25, 2026 to Mar 28, 2027, HAA is 4 hours behind CET.

For most of the year, working hours of 9:00 am to 6:00 pm in HAA correspond to 2:00 pm to 11:00 pm in CEST. At other times of the year, working hours of 9:00 am to 6:00 pm in HAA correspond to 1:00 pm to 10:00 pm in CET.For most of the year, working hours of 09:00 to 18:00 in HAA correspond to 14:00 to 23:00 in CEST. At other times of the year, working hours of 09:00 to 18:00 in HAA correspond to 13:00 to 22:00 in CET.

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

Time Difference

Heure Avancée de l'Atlantique is 4 hours behind Central European Time.
9:00 am09:00 in HAA is 1:00 pm13:00 in CET

HAA to CET call time
Best time for a conference call or a meeting is between 9am-2pm09:00-14:00 in HAA which corresponds to 1pm-6pm13:00-18:00 in CET

9:00 am09:00 Heure Avancée de l'Atlantique (HAA). Offset UTC -3:00 hours
1:00 pm13:00 Central European Time (CET). Offset UTC +1:00 hour

9:00 am09:00 HAA / 1:00 pm13:00 CET

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
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Heure Avancée de l'Atlantique

Offset: HAA is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bermuda, Canada, Greenland

Principal Cities: The largest city in the HAA time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Moncton, Saint John, Fredericton.

Map of the areas on Heure Avancée de l'Atlantique (HAA)
HAA part of the year

Today all shaded areas are on HAA.

Daylight Saving: Heure Avancée de l'Atlantique (HAA) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Atlantic Standard Time (AST).

123456789101112Start: Heure Avancée de l'Atlantique (HAA) 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: Heure Avancée de l'Atlantique (HAA) 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 Canada daylight saving time and upcoming clock changes worldwide.

HAA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for HAA
  • P - short form of 'Papa'
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time

Central European Time

Offset: CET is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Albania, Algeria, Andorra, Austria, Belgium, Bosnia and Herzegovina, Croatia, Czechia, Denmark, France, Germany, Gibraltar, Hungary, Italy, Kosovo, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard and Jan Mayen, Sweden, Switzerland, Tunisia, Vatican City

Principal Cities: The largest city in the CET time zone is Berlin in Germany, with about 3.426 million people. Other major cities in this time zone include Madrid, Algiers, Rome, Paris.

German: MEZ - Mitteleuropäische Zeit

Map of the areas on Central European Time (CET)
CET all year CET part of the year

Today all shaded areas are on CET.

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Central European Summer Time (CEST).

123456789101112Start: Central European Time (CET) started on Sunday, October 25, 2026 at 3:00 am03:00 local time and clocks were set one hour back to Sunday, October 25, 2026, 2:00 am02:00. Standard time starts annually on the last Sunday of October.

123456789101112End: Central European Time (CET) ends on Sunday, March 28, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 28, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the last Sunday of March.

See upcoming clock changes worldwide.

CET representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for CET
  • A - short form of 'Alpha'
IANA/Olson: Reflects CET time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Algiers
  • Africa/Ceuta
  • Africa/Tunis
  • Arctic/Longyearbyen
  • Atlantic/Jan_Mayen
  • CET
  • Europe/Amsterdam
  • Europe/Andorra
  • Europe/Belgrade
  • Europe/Berlin
  • Europe/Bratislava
  • Europe/Brussels
  • Europe/Budapest
  • Europe/Busingen
  • Europe/Copenhagen
  • Europe/Gibraltar
  • Europe/Ljubljana
  • Europe/Luxembourg
  • Europe/Madrid
  • Europe/Malta
  • Europe/Monaco
  • Europe/Oslo
  • Europe/Paris
  • Europe/Podgorica
  • Europe/Prague
  • Europe/Rome
  • Europe/San_Marino
  • Europe/Sarajevo
  • Europe/Skopje
  • Europe/Stockholm
  • Europe/Tirane
  • Europe/Vaduz
  • Europe/Vatican
  • Europe/Vienna
  • Europe/Warsaw
  • Europe/Zagreb
  • Europe/Zurich
  • MET
  • Poland
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time