ACDT to San Francisco to AEST to PT to Portland, ME, USA to BST to UTC Time Converter

Updating current time…
ACDT
Australian Central Daylight Time
UTC+10:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
San Francisco
California, USAPST
UTC−8
18h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AEST
Australian Eastern Standard Time
UTC+10
30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Australia is on daylight saving time: AEDT (UTC+11) until Sun, Apr 4, 2027.

Queensland stays on AEST (UTC+10).

Queensland · AEST all year (UTC+10)Sydney, Melbourne · AEDT (UTC+11)
PT
Pacific Time
UTC−8
18h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Portland
Maine, USAEST
UTC−5
15h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT/BST
Greenwich Mean Time
UTC+0
10h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on standard time: GMT (UTC+0) until Sun, Mar 28, 2027.
Keep BST (UTC+1)
UTC
Coordinated Universal Time
UTC+0
10h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:30 pm22:30 ACDT (UTC+10:30), Nov 8, 2026 = 4:00 am04:00 PST (UTC-8), Nov 8, 2026 = 10:00 pm22:00 AEST (UTC+10), Nov 8, 2026 = 4:00 am04:00 PT (UTC-8), Nov 8, 2026 = 7:00 am07:00 EST (UTC-5), Nov 8, 2026 = 12:00 pm12:00 GMT (UTC+0), Nov 8, 2026 = 12:00 pm12:00 UTC (UTC+0), Nov 8, 2026

ACDT is 18 hours and 30 minutes ahead of San Francisco. ACDT is 30 minutes ahead of AEST. ACDT is 18 hours and 30 minutes ahead of PT. ACDT is 15 hours and 30 minutes ahead of Portland. ACDT is 10 hours and 30 minutes ahead of GMT. ACDT is 10 hours and 30 minutes ahead of UTC.

How the time difference changes

ACDT to San Francisco

Depending on seasonal clock changes, ACST is 16 hours and 30 minutes ahead of San Francisco, ACDT is 17 hours and 30 minutes ahead of San Francisco, or ACDT is 18 hours and 30 minutes ahead of San Francisco.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACST correspond to 4:30 pm (previous day) to 1:30 am in San Francisco, working hours of 9:00 am to 6:00 pm in ACDT correspond to 3:30 pm (previous day) to 12:30 am in San Francisco, or working hours of 9:00 am to 6:00 pm in ACDT correspond to 2:30 pm (previous day) to 11:30 pm (previous day) in San Francisco.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACST correspond to 16:30 (previous day) to 01:30 in San Francisco, working hours of 09:00 to 18:00 in ACDT correspond to 15:30 (previous day) to 00:30 in San Francisco, or working hours of 09:00 to 18:00 in ACDT correspond to 14:30 (previous day) to 23:30 (previous day) in San Francisco.

ACDT to AEST

Depending on seasonal clock changes, ACDT is 30 minutes ahead of AEST or ACST is 30 minutes behind AEST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACDT correspond to 8:30 am to 5:30 pm in AEST or working hours of 9:00 am to 6:00 pm in ACST correspond to 9:30 am to 6:30 pm in AEST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACDT correspond to 08:30 to 17:30 in AEST or working hours of 09:00 to 18:00 in ACST correspond to 09:30 to 18:30 in AEST.

ACDT to PT

Depending on seasonal clock changes, ACST is 16 hours and 30 minutes ahead of PT, ACDT is 17 hours and 30 minutes ahead of PT, or ACDT is 18 hours and 30 minutes ahead of PT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACST correspond to 4:30 pm (previous day) to 1:30 am in PT, working hours of 9:00 am to 6:00 pm in ACDT correspond to 3:30 pm (previous day) to 12:30 am in PT, or working hours of 9:00 am to 6:00 pm in ACDT correspond to 2:30 pm (previous day) to 11:30 pm (previous day) in PT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACST correspond to 16:30 (previous day) to 01:30 in PT, working hours of 09:00 to 18:00 in ACDT correspond to 15:30 (previous day) to 00:30 in PT, or working hours of 09:00 to 18:00 in ACDT correspond to 14:30 (previous day) to 23:30 (previous day) in PT.

ACDT to Portland, ME, USA

Depending on seasonal clock changes, ACST is 13 hours and 30 minutes ahead of Portland, ME, USA, ACDT is 14 hours and 30 minutes ahead of Portland, ME, USA, or ACDT is 15 hours and 30 minutes ahead of Portland, ME, USA.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACST correspond to 7:30 pm (previous day) to 4:30 am in Portland, ME, USA, working hours of 9:00 am to 6:00 pm in ACDT correspond to 6:30 pm (previous day) to 3:30 am in Portland, ME, USA, or working hours of 9:00 am to 6:00 pm in ACDT correspond to 5:30 pm (previous day) to 2:30 am in Portland, ME, USA.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACST correspond to 19:30 (previous day) to 04:30 in Portland, ME, USA, working hours of 09:00 to 18:00 in ACDT correspond to 18:30 (previous day) to 03:30 in Portland, ME, USA, or working hours of 09:00 to 18:00 in ACDT correspond to 17:30 (previous day) to 02:30 in Portland, ME, USA.

ACDT to BST

Depending on seasonal clock changes, ACST is 8 hours and 30 minutes ahead of BST, ACDT is 9 hours and 30 minutes ahead of BST, or ACDT is 10 hours and 30 minutes ahead of GMT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACST correspond to 12:30 am to 9:30 am in BST, working hours of 9:00 am to 6:00 pm in ACDT correspond to 11:30 pm (previous day) to 8:30 am in BST, or working hours of 9:00 am to 6:00 pm in ACDT correspond to 10:30 pm (previous day) to 7:30 am in GMT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACST correspond to 00:30 to 09:30 in BST, working hours of 09:00 to 18:00 in ACDT correspond to 23:30 (previous day) to 08:30 in BST, or working hours of 09:00 to 18:00 in ACDT correspond to 22:30 (previous day) to 07:30 in GMT.

ACDT to UTC

Depending on seasonal clock changes, ACST is 9 hours and 30 minutes ahead of UTC or ACDT is 10 hours and 30 minutes ahead of UTC.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in ACST correspond to 11:30 pm (previous day) to 8:30 am in UTC or working hours of 9:00 am to 6:00 pm in ACDT correspond to 10:30 pm (previous day) to 7:30 am in UTC.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in ACST correspond to 23:30 (previous day) to 08:30 in UTC or working hours of 09:00 to 18:00 in ACDT correspond to 22:30 (previous day) to 07:30 in UTC.

Compare ACDT time with San Francisco, AEST, PT, Portland, BST, and UTC time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Australian Central Daylight Time is 18 hours and 30 minutes ahead of PST (Pacific Standard Time). Australian Central Daylight Time is 30 minutes ahead of Australian Eastern Standard Time. Australian Central Daylight Time is 18 hours and 30 minutes ahead of Pacific Time. Australian Central Daylight Time is 15 hours and 30 minutes ahead of EST (Eastern Standard Time). Australian Central Daylight Time is 10 hours and 30 minutes ahead of Greenwich Mean Time. Australian Central Daylight Time is 10 hours and 30 minutes ahead of Coordinated Universal Time.
10:30 pm22:30 in ACDT is 4:00 am04:00 in San Francisco, CA, USA and is 10:00 pm22:00 in AEST and is 4:00 am04:00 in PT and is 7:00 am07:00 in Portland, ME, USA and is 12:00 pm12:00 in GMT and is 12:00 pm12:00 in UTC

ACDT to San Francisco call time
Best time for a conference call or a meeting is between 9am-12:30pm09:00-12:30 in ACDT which corresponds to 2:30pm-6pm14:30-18:00 in San Francisco (previous day).
ACDT to AEST call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in ACDT which corresponds to 9am-5:30pm09:00-17:30 in AEST.
ACDT to PT call time
Best time for a conference call or a meeting is between 9am-12:30pm09:00-12:30 in ACDT which corresponds to 2:30pm-6pm14:30-18:00 in PT (previous day).
ACDT to Portland call time
Best time for a conference call or a meeting is between 9am-9:30am09:00-09:30 in ACDT which corresponds to 5:30pm-6pm17:30-18:00 in Portland (previous day).
ACDT to GMT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in ACDT which corresponds to 8am-9am08:00-09:00 in GMT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
ACDT to UTC call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in ACDT which corresponds to 8am-9am08:00-09:00 in UTC. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

10:30 pm22:30 Australian Central Daylight Time (ACDT). Offset UTC +10:30 hours
4:00 am04:00 PST (Pacific Standard Time) (San Francisco, CA, USA). Offset UTC -8:00 hours
10:00 pm22:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
4:00 am04:00 Pacific Time (PT). Offset UTC -8:00 hours
7:00 am07:00 EST (Eastern Standard Time) (Portland, ME, USA). Offset UTC -5:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:00 pm12:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours

10:30 pm22:30 ACDT / 4:00 am04:00 San Francisco, CA, USA / 10:00 pm22:00 AEST / 4:00 am04:00 PT / 7:00 am07:00 Portland, ME, USA / 12:00 pm12:00 GMT / 12:00 pm12:00 UTC

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
ACDTSan Francisco, CA, USAAESTPTPortland, ME, USAGMTUTC
5:30am previous day11:30pm previous day5:30am previous day8:30am previous day1:30pm previous day1:30pm previous day
6:30am previous day12:30am6:30am previous day9:30am previous day2:30pm previous day2:30pm previous day
7:30am previous day1:30am7:30am previous day10:30am previous day3:30pm previous day3:30pm previous day
8:30am previous day2:30am8:30am previous day11:30am previous day4:30pm previous day4:30pm previous day
9:30am previous day3:30am9:30am previous day12:30pm previous day5:30pm previous day5:30pm previous day
10:30am previous day4:30am10:30am previous day1:30pm previous day6:30pm previous day6:30pm previous day
11:30am previous day5:30am11:30am previous day2:30pm previous day7:30pm previous day7:30pm previous day
12:30pm previous day6:30am12:30pm previous day3:30pm previous day8:30pm previous day8:30pm previous day
1:30pm previous day7:30am1:30pm previous day4:30pm previous day9:30pm previous day9:30pm previous day
2:30pm previous day8:30am2:30pm previous day5:30pm previous day10:30pm previous day10:30pm previous day
3:30pm previous day9:30am3:30pm previous day6:30pm previous day11:30pm previous day11:30pm previous day
4:30pm previous day10:30am4:30pm previous day7:30pm previous day12:30am12:30am
5:30pm previous day11:30am5:30pm previous day8:30pm previous day1:30am1:30am
6:30pm previous day12:30pm6:30pm previous day9:30pm previous day2:30am2:30am
7:30pm previous day1:30pm7:30pm previous day10:30pm previous day3:30am3:30am
8:30pm previous day2:30pm8:30pm previous day11:30pm previous day4:30am4:30am
9:30pm previous day3:30pm9:30pm previous day12:30am5:30am5:30am
10:30pm previous day4:30pm10:30pm previous day1:30am6:30am6:30am
11:30pm previous day5:30pm11:30pm previous day2:30am7:30am7:30am
12:30am6:30pm12:30am3:30am8:30am8:30am
1:30am7:30pm1:30am4:30am9:30am9:30am
2:30am8:30pm2:30am5:30am10:30am10:30am
3:30am9:30pm3:30am6:30am11:30am11:30am
4:30am10:30pm4:30am7:30am12:30pm12:30pm
05:30 previous day23:30 previous day05:30 previous day08:30 previous day13:30 previous day13:30 previous day
06:30 previous day00:3006:30 previous day09:30 previous day14:30 previous day14:30 previous day
07:30 previous day01:3007:30 previous day10:30 previous day15:30 previous day15:30 previous day
08:30 previous day02:3008:30 previous day11:30 previous day16:30 previous day16:30 previous day
09:30 previous day03:3009:30 previous day12:30 previous day17:30 previous day17:30 previous day
10:30 previous day04:3010:30 previous day13:30 previous day18:30 previous day18:30 previous day
11:30 previous day05:3011:30 previous day14:30 previous day19:30 previous day19:30 previous day
12:30 previous day06:3012:30 previous day15:30 previous day20:30 previous day20:30 previous day
13:30 previous day07:3013:30 previous day16:30 previous day21:30 previous day21:30 previous day
14:30 previous day08:3014:30 previous day17:30 previous day22:30 previous day22:30 previous day
15:30 previous day09:3015:30 previous day18:30 previous day23:30 previous day23:30 previous day
16:30 previous day10:3016:30 previous day19:30 previous day00:3000:30
17:30 previous day11:3017:30 previous day20:30 previous day01:3001:30
18:30 previous day12:3018:30 previous day21:30 previous day02:3002:30
19:30 previous day13:3019:30 previous day22:30 previous day03:3003:30
20:30 previous day14:3020:30 previous day23:30 previous day04:3004:30
21:30 previous day15:3021:30 previous day00:3005:3005:30
22:30 previous day16:3022:30 previous day01:3006:3006:30
23:30 previous day17:3023:30 previous day02:3007:3007:30
00:3018:3000:3003:3008:3008:30
01:3019:3001:3004:3009:3009:30
02:3020:3002:3005:3010:3010:30
03:3021:3003:3006:3011:3011:30
04:3022:3004:3007:3012:3012:30

Australian Central Daylight Time

Offset: ACDT is 10 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the ACDT time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Mount Gambier, Mount Barker, Whyalla, Gawler.

Map of the areas on Australian Central Daylight Time (ACDT)
ACDT part of the year

Today all shaded areas are on ACDT.

Open the world time zone map© OpenStreetMap

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

123456789101112Start: Australian Central Daylight Time (ACDT) started on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00. Daylight saving starts annually on the first Sunday of October.

123456789101112End: Australian Central Daylight Time (ACDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

ACDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1030 - basic
  • +10:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
IANA/Olson: Reflects ACDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/South
  • Australia/Yancowinna
Time zones with the GMT +10:30 offset:
  • ACDT - Australian Central Daylight Time
  • LHST - Lord Howe Standard Time

San Francisco Time Zone and Facts

Time Zone

Abbreviation / Offset
PST – Pacific Standard Time, UTC-8 (now)
PDT – Pacific Daylight Time, UTC-7 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (PDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (PST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

San Francisco Facts

Country
USA
State
California
Alternative Names
Franciscopolis, Frisco, Kapalakiko, Khiu-kim-san, Khiu-kîm-sân, Lungsod ng San Francisco, New Albion, SF, SFO, San Francisco, San Franciscu, San Francisko, San Fransisco, San Fransiskas, San Fransisko, San Frantzisko, San Phransisko, San-Francisko, San-Francyska, San-Fransisko, Sanfrancisko, Sao Francisco, São Francisco, Yerba Buena, can pirancisko, jiu jin shan, saenpeulan, saenpeulansiseuko, saina pharansisako, saina phransisko, san f ran si s ko, san fan shi, san fransskw, san fransyskw, san fransyskۆ, san phransisko, sana phransisako ka'unti, sana phransisko, sanfuranshisuko, sena phransisko, sn prnsysqw, syana phransisko, Σαν Φρανσίσκο, Сан Франсиско, Сан Франциско, Сан-Франциско, Сан-Францыска, Сан-Франціско, Սան Ֆրանցիսկո, סאן פראנציסקא, סן פרנסיסקו, سان فرانسسکو, سان فرانسيسكو, سان فرانسیسکو, سان فرانسیسکۆ, सॅन फ्रान्सिस्को, सैन फ्रांसिस्को, स्यान फ्रान्सिस्को, সান ফ্রান্সিসকো কাউন্টি, সান ফ্রান্সিস্কো, ਸੈਨ ਫਰਾਂਸਿਸਕੋ, சான் பிரான்சிஸ்கோ, శాన్ ఫ్రాన్సిస్కో, സാൻ ഫ്രാൻസിസ്കോ, සැන් ෆ්‍රැන්සිස්කෝ, ซานฟรานซิสโก, སན་ཧྥུ་རན་སིས་ཁོ, ဆန်ဖရန်စစ္စကိုမြို့, სან-ფრანცისკო, サンフランシスコ, 三藩市, 旧金山, 舊金山, 샌프란, 샌프란시스코
Population
827,526
Currency
Dollar (USD)
Geographic Coordinates
37° 46' N Latitude / 122° 25' W Longitude
International Dialing Code
+1
More About San Francisco
San Francisco local time and city facts

Australian Eastern Standard Time

Offset: AEST is 10 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 5.639 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Newcastle.

Map of the areas on Australian Eastern Standard Time (AEST)
AEST all year AEST part of the year

Today the lighter areas are on UTC+11 (AEDT).

Open the world time zone map© OpenStreetMap

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

123456789101112End: Australian Eastern Standard Time (AEST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.

123456789101112Start: Australian Eastern Standard Time (AEST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra

Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.

AEST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for AEST
  • K - short form of 'Kilo'
IANA/Olson: Reflects AEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/Macquarie
  • Australia/ACT
  • Australia/Brisbane
  • Australia/Canberra
  • Australia/Currie
  • Australia/Hobart
  • Australia/Lindeman
  • Australia/Melbourne
  • Australia/NSW
  • Australia/Queensland
  • Australia/Sydney
  • Australia/Tasmania
  • Australia/Victoria
Time zones with the GMT +10 offset:
  • AEST - Australian Eastern Standard Time
  • CHUT - Chuuk Time
  • ChST - Chamorro Standard Time
  • K - Kilo Time Zone
  • KDT - Korea Daylight Time
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time

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 North America. 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 United States and the Northwestern part of Mexico. From November 1, 2026, most of British Columbia in Canada keeps UTC-7 all year instead.

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PT 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: HNP - Heure Normale du Pacifique

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

Map of the areas on Pacific Time (PT)
PT all year

Open the world time zone map© OpenStreetMap

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

Portland Time Zone and Facts

Time Zone

Abbreviation / Offset
EST – Eastern Standard Time, UTC-5 (now)
EDT – Eastern Daylight Time, UTC-4 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (EDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (EST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Portland Facts

Country
USA
State
Maine
Alternative Names
Casco, Elbow, Falmouth, Falmouth Neck, Indigreat, Machegony, Machigonne, PWM, Portland, Portland i Maine, Portlandia, Portlant, Portlend, Portlenda, Quack, The Neck, Uh-kos-is-co, bo te lan, bwrtland, portalanda, portalyanda, poteullaendeu, potorando, pwrtlnd, pwrtlnd myn, Πόρτλαντ, Портланд, Портленд, Փորթլենդ, פורטלנד, بورتلاند, ورٹلینڈ، مینے, پورتلند، مین, पोर्टलंड, পোর্টল্যান্ড, ポートランド, 波特蘭, 포틀랜드
Population
66,881
Currency
Dollar (USD)
Geographic Coordinates
43° 39' N Latitude / 70° 15' W Longitude
International Dialing Code
+1
More About Portland
Portland local time and city facts

British Summer Time

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

Countries using this time zone: Guernsey, Isle of Man, Jersey, United Kingdom

Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

Current time in the United Kingdom: UK time now

Map of the areas on British Summer Time (BST)
BST part of the year

Today the shaded areas are on UTC+0 (GMT).

Open the world time zone map© OpenStreetMap

BST 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 BST
  • A - short form of 'Alpha'
IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
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

Coordinated Universal Time

Offset: UTC is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Faroe Islands, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Portugal, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Spain, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the UTC time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is the successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but UTC is the standard the scientific community uses.
UTC has been the time standard commonly used across the world since 1972. It is used in many technical fields, such as aviation and meteorology, and to synchronize time across internet networks.

Map of the areas on Coordinated Universal Time (UTC)
UTC all year UTC part of the year

Today some of the lighter areas are on UTC−1.

Open the world time zone map© OpenStreetMap

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone