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A
Alpha Time Zone
GMT +1
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IDT/IST
Israel Daylight Time
GMT +3
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IST is not used on this date.

This converter uses IDT (UTC+3), as in Jerusalem.

Quick answers

Selected conversion

1:00 pm13:00 A (UTC+1), Oct 10, 2026 = 3:00 pm15:00 IDT (UTC+3), Oct 10, 2026

A is 2 hours behind IDT.

A and IST examples

These examples always use A (UTC+1) and IST (UTC+2). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

A is 1 hour behind IST.

How the time difference changes

For most of the year, A is 2 hours behind IDT Israel. At other times of the year, A is 1 hour behind IST Israel.

For most of the year, working hours of 9:00 am to 5:00 pm in A correspond to 11:00 am to 7:00 pm in IDT Israel. At other times of the year, working hours of 9:00 am to 5:00 pm in A correspond to 10:00 am to 6:00 pm in IST Israel.For most of the year, working hours of 09:00 to 17:00 in A correspond to 11:00 to 19:00 in IDT Israel. At other times of the year, working hours of 09:00 to 17:00 in A correspond to 10:00 to 18:00 in IST Israel.

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

Time Difference

Alpha Time Zone is 2 hours behind Israel Daylight Time.
1:00 pm13:00 in A is 3:00 pm15:00 in IDT

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

1:00 pm13:00 Alpha Time Zone (A). Offset UTC +1:00 hour
3:00 pm15:00 Israel Daylight Time (IDT). Offset UTC +3:00 hours

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

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

Alpha Time Zone

Offset: A is 1 hour ahead Greenwich Mean Time (GMT) and is used in Military

Daylight Saving: Clocks in Alpha Time Zone (A) do not change for daylight saving time, so A stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

A 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 A
  • A - short form of 'Alpha'
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

Israel Standard Time

Offset: IST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Israel

Principal Cities: The largest city in the IST 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.

IST Time Zone Geo Map
IST timezone map

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

Daylight saving time clock moves forward for one hourEnd: Israel Standard Time (IST) ended 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 local daylight time instead. Standard time ends annually on the last Friday of March.

Daylight saving time clock moves back for one hourStart: Israel Standard Time (IST) starts 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. Standard time starts annually on the last Sunday of October.

See upcoming clock changes worldwide.

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Bravo - Military abbreviation for IST
  • B - short form of 'Bravo'
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jerusalem
  • Asia/Tel_Aviv
  • Israel
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2
Time zones with the GMT +2 offset:
  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time