+0530
GMT +5:30
GMT/BST
Greenwich Mean Time
GMT +0
BST automatically adjusted to GMT time zone, that is in use

Time Difference

is 5 hours and 30 minutes ahead of Greenwich Mean Time
12:00 pm12:00 in +0530 is 6:30 am06:30 in GMT

+0530 to BST call time
Best time for a conference call or a meeting is between 12:30pm-6pm in +0530 which corresponds to 8am-1:30pm in BST

12:00 pm12:00 (+0530). Offset UTC +5:30 hours
6:30 am06:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours

12:00 pm12:00 +0530 / 6:30 am06:30 GMT

+0530 GMT
12am (midnight) 6:30 pm
1am 7:30 pm
2am 8:30 pm
3am 9:30 pm
4am 10:30 pm
5am 11:30 pm
6am 12:30 am
7am 1:30 am
8am 2:30 am
9am 3:30 am
10am 4:30 am
11am 5:30 am
12pm (noon) 6:30 am
1pm 7:30 am
2pm 8:30 am
3pm 9:30 am
4pm 10:30 am
5pm 11:30 am
6pm 12:30 pm
7pm 1:30 pm
8pm 2:30 pm
9pm 3:30 pm
10pm 4:30 pm
11pm 5:30 pm
0:00 18:30
1:00 19:30
2:00 20:30
3:00 21:30
4:00 22:30
5:00 23:30
6:00 0:30
7:00 1:30
8:00 2:30
9:00 3:30
10:00 4:30
11:00 5:30
12:00 6:30
13:00 7:30
14:00 8:30
15:00 9:30
16:00 10:30
17:00 11:30
18:00 12:30
19:00 13:30
20:00 14:30
21:00 15:30
22:00 16:30
23:00 17:30

+0530

Offset: +0530 is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Sri Lanka

Principal Cities: The largest city in the +0530 timezone is Colombo from Sri Lanka with population about 648,034 people. Other major cities in the area are Galkissa, Moratuwa, Jaffna, Negombo

Daylight Saving: (+0530) is not adjusted for daylight saving therefore +0530 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, remains the same

+0530 representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
IANA/Olson: Reflects +0530 time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Colombo

British Summer Time

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

Countries: It is used in following countries: Britain (UK), Guernsey, Isle of Man, Jersey

Principal Cities: The largest city in the BST timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Birmingham, Glasgow, Liverpool, Saint Helier

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 for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

BST Time Zone Geo Map
BST timezone map

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 one 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
  • 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
  • Brasilia Standard Time - UTC -3
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