BST
Bougainville Standard Time
GMT +11
IST
India Standard Time
GMT +5:30

Time Difference

Bougainville Standard Time is 5 hours and 30 minutes ahead of India Standard Time
12:00 pm12:00 in BST is 6:30 am06:30 in IST

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

12:00 pm12:00 Bougainville Standard Time (BST). Offset UTC +11:00 hours
6:30 am06:30 India Standard Time (IST). Offset UTC +5:30 hours

12:00 pm12:00 BST / 6:30 am06:30 IST

BST IST
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

Bougainville Standard Time

Offset: BST is 11 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +11 - basic short
  • +1100 - basic
  • +11:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates eleven 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
  • Lima - Military abbreviation for BST
  • L - short form of 'Lima'
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 +11 offset:
  • AEDT - Australian Eastern Daylight Time
  • BST - Bougainville Standard Time
  • KOST - Kosrae Time
  • L - Lima Time Zone
  • LHDT - Lord Howe Daylight Time
  • NCT - New Caledonia Time
  • PETT - Kamchatka Time
  • PONT - Pohnpei Standard Time
  • SBT - Solomon IslandsTime
  • VLAST - Vladivostok Summer Time
  • VUT - Vanuatu Time

India Standard Time

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

Countries: It is used in following countries: India

Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai

Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same

IST Time Zone Geo Map
IST timezone map

IST 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 IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
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
  • Iran Standard Time - UTC +3:30