BST to NZST Converter

Updating current time…
GMT/BST
Greenwich Mean Time
UTC+0
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)
NZDT/NZST
New Zealand Daylight Time
UTC+13
tomorrow (next day)
13h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
New Zealand is on daylight saving time: NZDT (UTC+13) until Sun, Apr 4, 2027.
Use NZST all year (UTC+12)

Quick answers

Selected conversion

12:00 pm12:00 GMT (UTC+0), Nov 1, 2026 = 1:00 am01:00 NZDT (UTC+13), Nov 2, 2026

GMT is 13 hours behind NZDT.

BST and NZST examples

These examples always use BST (UTC+1) and NZST (UTC+12). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

BST is 11 hours behind NZST.

How the time difference changes

Depending on seasonal clock changes, BST is 11 hours behind NZST, BST is 12 hours behind NZDT, or GMT is 13 hours behind NZDT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in BST correspond to 8:00 pm to 5:00 am (next day) in NZST, working hours of 9:00 am to 6:00 pm in BST correspond to 9:00 pm to 6:00 am (next day) in NZDT, or working hours of 9:00 am to 6:00 pm in GMT correspond to 10:00 pm to 7:00 am (next day) in NZDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in BST correspond to 20:00 to 05:00 (next day) in NZST, working hours of 09:00 to 18:00 in BST correspond to 21:00 to 06:00 (next day) in NZDT, or working hours of 09:00 to 18:00 in GMT correspond to 22:00 to 07:00 (next day) in NZDT.

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

Time Difference

Greenwich Mean Time is 13 hours behind New Zealand Daylight Time.
12:00 pm12:00 in GMT is 1:00 am01:00 in NZDT

GMT to NZDT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in GMT which corresponds to 7:30am-8:30am07:30-08:30 in NZDT (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours

12:00 pm12:00 GMT / 1:00 am01:00 NZDT

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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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

New Zealand Standard Time

Offset: NZST is 12 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, New Zealand

Principal Cities: The largest city in the NZST time zone is Auckland in New Zealand, with about 1.547 million people. Other major cities in this time zone include Christchurch, Wellington, Hamilton, Tauranga.

Map of the areas on New Zealand Standard Time (NZST)
NZST part of the year

Today the shaded areas are on UTC+13 (NZDT).

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 New Zealand Daylight Time (NZDT).

123456789101112End: New Zealand Standard Time (NZST) ended on Sunday, September 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the last Sunday of September.

123456789101112Start: New Zealand Standard Time (NZST) 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 New Zealand daylight saving time and upcoming clock changes worldwide.

NZST 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Mike - Military abbreviation for NZST
  • M - short form of 'Mike'
IANA/Olson: Reflects NZST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland
Time zones with the GMT +12 offset:
  • ANAST - Anadyr Summer Time
  • ANAT - Anadyr Time
  • FJT - Fiji Time
  • GILT - Gilbert Island Time
  • M - Mike Time Zone
  • MAGST - Magadan Summer Time
  • MHT - Marshall Islands Time
  • NRT - Nauru Time
  • NZST - New Zealand Standard Time
  • PETT - Kamchatka Time
  • PETST - Kamchatka Summer Time
  • TVT - Tuvalu Time
  • WFT - Wallis and Futuna Time