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IDT to BST Converter

Updating current time…
IDT
Israel Daylight Time
GMT +3
12am
3am
6am
9am
12pm
3pm
6pm
9pm
BST
British Summer Time
GMT +1
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

3:00 pm15:00 IDT (UTC+3), Oct 11, 2026 = 1:00 pm13:00 BST (UTC+1), Oct 11, 2026

IDT is 2 hours ahead of BST.

IDT and BST examples

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

IDT is 2 hours ahead of BST.

How the time difference changes

For most of the year, IDT is 2 hours ahead of BST. At other times of the year, IST is 2 hours ahead of GMT or IDT is 3 hours ahead of GMT. Briefly around clock changes, IST is 1 hour ahead of BST.

For most of the year, working hours of 9:00 am to 5:00 pm in IDT correspond to 7:00 am to 3:00 pm in BST. At other times of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 7:00 am to 3:00 pm in GMT or working hours of 9:00 am to 5:00 pm in IDT correspond to 6:00 am to 2:00 pm in GMT.For most of the year, working hours of 09:00 to 17:00 in IDT correspond to 07:00 to 15:00 in BST. At other times of the year, working hours of 09:00 to 17:00 in IST correspond to 07:00 to 15:00 in GMT or working hours of 09:00 to 17:00 in IDT correspond to 06:00 to 14:00 in GMT.

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

Time Difference

Israel Daylight Time is 2 hours ahead of British Summer Time.
3:00 pm15:00 in IDT is 1:00 pm13:00 in BST

IDT to BST call time
Best time for a conference call or a meeting is between 11am-5pm11:00-17:00 in IDT which corresponds to 9am-3pm09:00-15:00 in BST

3:00 pm15:00 Israel Daylight Time (IDT). Offset UTC +3:00 hours
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour

3:00 pm15:00 IDT / 1:00 pm13:00 BST

IDTBST
12:00am10:00pm
1:00am11:00pm
2:00am12:00am
3:00am1:00am
4:00am2:00am
5:00am3:00am
6:00am4:00am
7:00am5:00am
8:00am6:00am
9:00am7:00am
10:00am8:00am
11:00am9:00am
12:00pm10:00am
1:00pm11:00am
2:00pm12:00pm
3:00pm1:00pm
4:00pm2:00pm
5:00pm3:00pm
6:00pm4:00pm
7:00pm5:00pm
8:00pm6:00pm
9:00pm7:00pm
10:00pm8:00pm
11:00pm9:00pm
00:0022:00
01:0023:00
02:0000:00
03:0001:00
04:0002:00
05:0003:00
06:0004:00
07:0005:00
08:0006:00
09:0007:00
10:0008:00
11:0009:00
12:0010:00
13:0011:00
14:0012:00
15:0013:00
16:0014:00
17:0015:00
18:0016:00
19:0017:00
20:0018:00
21:0019:00
22:0020:00
23:0021:00

Israel Daylight Time

Offset: IDT is 3 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Israel

Principal Cities: The largest city in the IDT time zone is Jerusalem in Israel, with about 971,800 people. Other major cities in this time zone include Tel Aviv, West Jerusalem, Haifa, Ashdod.

IDT Time Zone Geo Map
IDT timezone map

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

Daylight saving time clock moves forward for one hourStart: Israel Daylight Time (IDT) started on Friday, March 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Friday, March 27, 2026, 3:00 am03:00. Daylight saving starts annually on the last Friday of March.

Daylight saving time clock moves back for one hourEnd: Israel Daylight Time (IDT) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

IDT 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Charlie - Military abbreviation for IDT
  • C - short form of 'Charlie'
IANA/Olson: Reflects IDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jerusalem
  • Asia/Tel_Aviv
  • Israel
Time zones with the GMT +3 offset:
  • EEST - Eastern European Summer Time
  • MSK - Moscow Standard Time
  • AST - Arabia Standard Time
  • C - Charlie Time Zone
  • EAT - Eastern Africa Time
  • FET - Further Eastern European Time
  • IDT - Israel Daylight Time
  • TRT - Turkey Time

British Summer Time

Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey

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

BST Time Zone Geo Map
BST timezone map

Daylight Saving: British Summer Time (BST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Greenwich Mean Time (GMT).

Daylight saving time clock moves forward for one hourStart: British Summer Time (BST) started on Sunday, March 29, 2026 at 1:00 am01:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 2:00 am02:00. Daylight saving starts annually on the last Sunday of March.

Daylight saving time clock moves back for one hourEnd: British Summer Time (BST) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See upcoming clock changes worldwide.

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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT