World Timezones

GMT to AST Converter

Compare AST to GMT instead
Greenwich Mean Time5:35 amFri, Jun 5
Greenwich Mean TimeBST
Europe · UTC+1
5:35 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Arabia Standard TimeAST
Middle East · UTC+3
7:35 amFri, Jun 5
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
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3p
4p
5p
6p
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8p
9p
10p
11p
12a
1a

Offset

The time difference between Greenwich Mean Time and Arabia Standard Time is 2 hours.

2 hours

Greenwich Mean Time (BST) is behind Arabia Standard Time (AST).

BST: UTC+1

AST: UTC+3

Greenwich Mean Time is currently observing daylight saving time; Arabia Standard Time is not.

When to schedule

Business-hours overlap: 9 AM–3 PM in Greenwich Mean Time (11 AM–5 PM in Arabia Standard Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 12:00 PM Greenwich Mean Time (2:00 PM Arabia Standard Time).

This window may shift by an hour during daylight saving time.

Note: the working week in Saudi Arabia runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

United Kingdom

  • Good FridayFri, Apr 3
  • Early May Bank HolidayMon, May 4
  • Spring Bank HolidayMon, May 25
  • Christmas DayFri, Dec 25
  • St. Stephen's DayMon, Dec 28

About these zones

Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.

Arabia Standard Time is also known as AST. To call Saudi Arabia, dial +966.

Arabia Standard Time is approximately 3,050 miles east of Greenwich Mean Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

GMTASTDay
12:00 am2:00 amSame day
1:00 am3:00 amSame day
2:00 am4:00 amSame day
3:00 am5:00 amSame day
4:00 am6:00 amSame day
5:00 am7:00 amSame day
6:00 am8:00 amSame day
7:00 am9:00 amSame day
8:00 am10:00 amSame day
9:00 am11:00 amSame day
10:00 am12:00 pmSame day
11:00 am1:00 pmSame day
12:00 pm2:00 pmSame day
1:00 pm3:00 pmSame day
2:00 pm4:00 pmSame day
3:00 pm5:00 pmSame day
4:00 pm6:00 pmSame day
5:00 pm7:00 pmSame day
6:00 pm8:00 pmSame day
7:00 pm9:00 pmSame day
8:00 pm10:00 pmSame day
9:00 pm11:00 pmSame day
10:00 pm12:00 am+1 day
11:00 pm1:00 am+1 day

Daylight saving time

Greenwich Mean Time observes daylight saving time; Arabia Standard Time does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Greenwich Mean Time
Sunrise
4:47 AM
Sunset
9:13 PM
Day length
16h 25m
Arabia Standard Time
Sunrise
5:05 AM
Sunset
6:41 PM
Day length
13h 36m

Daylight overlap: 11h 53m — 4:47 AM–4:41 PM in Greenwich Mean Time (6:47 AM–6:41 PM in Arabia Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Arabia Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Greenwich Mean Time

  • LCY
  • LGW
  • LHR
  • LTN
  • STN
  • BHX
  • EMA
  • GLA
  • PIK
  • LBA

Airports in Arabia Standard Time

  • JED
  • RUH
  • MED
  • DMM

Related conversions

Common conversions

What is 9:00 am GMT in AST?
9:00 am GMT is 11:00 am AST.
What is 12:00 pm GMT in AST?
12:00 pm GMT is 2:00 pm AST.
What is 12:30 pm GMT in AST?
12:30 pm GMT is 2:30 pm AST.
What is 2:00 pm GMT in AST?
2:00 pm GMT is 4:00 pm AST.
What is 5:00 pm GMT in AST?
5:00 pm GMT is 7:00 pm AST.
What is 11:30 pm GMT in AST?
11:30 pm GMT is 1:30 am AST, the next day.