AST
Arabia Standard Time
GMT +3
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GST
Gulf Standard Time
GMT +4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

AST is 1 hour behind GST. AST uses GMT +3, and GST uses GMT +4 for this comparison.

For example, 3:00 pm AST is 4:00 pm GST. Use the converter above to adjust the date or time and create a shareable meeting link.

Best time for a conference call or a meeting is between 9am-4pm in AST which corresponds to 10am-5pm in GST

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

Time Difference

Arabia Standard Time is 1 hour behind Gulf Standard Time
3:00 pm15:00 in AST is 4:00 pm16:00 in GST

AST to GST call time
Best time for a conference call or a meeting is between 9am-4pm in AST which corresponds to 10am-5pm in GST

3:00 pm15:00 Arabia Standard Time (AST). Offset UTC +3:00 hours
4:00 pm16:00 Gulf Standard Time (GST). Offset UTC +4:00 hours

3:00 pm15:00 AST / 4:00 pm16:00 GST

ASTGST
12am (midnight)1am
1am2am
2am3am
3am4am
4am5am
5am6am
6am7am
7am8am
8am9am
9am10am
10am11am
11am12pm (noon)
12pm (noon)1pm
1pm2pm
2pm3pm
3pm4pm
4pm5pm
5pm6pm
6pm7pm
7pm8pm
8pm9pm
9pm10pm
10pm11pm
11pm12am (midnight)
00:0001:00
01:0002:00
02:0003:00
03:0004:00
04:0005:00
05:0006:00
06:0007:00
07:0008:00
08:0009:00
09:0010:00
10:0011:00
11:0012:00
12:0013:00
13:0014:00
14:0015:00
15:0016:00
16:0017:00
17:0018:00
18:0019:00
19:0020:00
20:0021:00
21:0022:00
22:0023:00
23:0000:00

Arabia Standard Time

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

Countries: It is used in following countries: Saudi Arabia

Principal Cities: The largest city in the AST timezone is Riyadh from Saudi Arabia with population about 4.206 million people. Other major cities in the area are Jeddah, Mecca, Medina, Sultanah

Daylight Saving: Arabia Standard Time (AST) is not adjusted for daylight saving therefore AST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Arabia Standard Time remains the same

AST Time Zone Geo Map
AST timezone map

AST 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 three hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Charlie - Military abbreviation for AST
  • C - short form of 'Charlie'
AST Abbreviation: Several time zones share AST abbreviation and it could refer to these time zones
  • Atlantic Standard Time - UTC -4
  • Arabia Standard Time - UTC +3
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

Gulf Standard Time

Offset: GST is 4 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: United Arab Emirates

Principal Cities: The largest city in the GST timezone is Dubai from United Arab Emirates with population about 1.137 million people. Other major cities in the area are Abu Dhabi, Sharjah, Al Ain, Ajman

Daylight Saving: Gulf Standard Time (GST) is not adjusted for daylight saving therefore GST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Gulf Standard Time remains the same

GST Time Zone Geo Map
GST timezone map

GST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +04 - basic short
  • +0400 - basic
  • +04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Delta - Military abbreviation for GST
  • D - short form of 'Delta'
Time zones with the GMT +4 offset:
  • KUYT - Kuybyshev Time
  • MSD - Moscow Daylight Time
  • SAMT - Samara Time
  • AMT - Armenia Time
  • AZT - Azerbaijan Time
  • D - Delta Time Zone
  • GET - Georgia Standard Time
  • GST - Gulf Standard Time
  • MUT - Mauritius Time
  • RET - Reunion Time
  • SCT - Seychelles Time