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IST to CST Asia

IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST
China Standard Time
GMT +8
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IST is 2 hours and 30 minutes behind CST. IST uses GMT +5:30, and CST uses GMT +8 for this comparison.

For example, 5:30 pm IST is 8:00 pm CST. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 9am-2:30pm IST, which is 11:30am-5pm CST.

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

Time Difference

India Standard Time is 2 hours and 30 minutes behind China Standard Time
5:30 pm17:30 in IST is 8:00 pm20:00 in CST

IST to CST call time
Best time for a conference call or a meeting is between 9am-2:30pm in IST which corresponds to 11:30am-5pm in CST

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
8:00 pm20:00 China Standard Time (CST). Offset UTC +8:00 hours

5:30 pm17:30 IST / 8:00 pm20:00 CST

ISTCST
12am (midnight)2:30 am
1am3:30 am
2am4:30 am
3am5:30 am
4am6:30 am
5am7:30 am
6am8:30 am
7am9:30 am
8am10:30 am
9am11:30 am
10am12:30 pm
11am1:30 pm
12pm (noon)2:30 pm
1pm3:30 pm
2pm4:30 pm
3pm5:30 pm
4pm6:30 pm
5pm7:30 pm
6pm8:30 pm
7pm9:30 pm
8pm10:30 pm
9pm11:30 pm
10pm12:30 am
11pm1:30 am
00:0002:30
01:0003:30
02:0004:30
03:0005:30
04:0006:30
05:0007:30
06:0008:30
07:0009:30
08:0010:30
09:0011:30
10:0012:30
11:0013:30
12:0014:30
13:0015:30
14:0016:30
15:0017:30
16:0018:30
17:0019:30
18:0020:30
19:0021:30
20:0022:30
21:0023:30
22:0000:30
23:0001:30

India Standard Time

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

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bangalore, Kolkata, Chennai.

Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

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 an offset of five hours and thirty minutes 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

China Standard Time

Offset: CST is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: China, Macau, Taiwan

Principal Cities: The largest city in the CST time zone is Shanghai in China, with about 14.609 million people. Other major cities in this time zone include Zhumadian, Taipei, Beijing, Nanchong.

Daylight Saving: Clocks in China Standard Time (CST) do not change for daylight saving time, so CST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

CST Time Zone Geo Map
CST timezone map

CST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for CST
  • H - short form of 'Hotel'
IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Chongqing
  • Asia/Chungking
  • Asia/Harbin
  • Asia/Macao
  • Asia/Macau
  • Asia/Shanghai
  • Asia/Taipei
  • PRC
  • ROC
CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones
  • Central Standard Time - UTC -6
  • China Standard Time - UTC +8
  • Cuba Standard Time - UTC -5
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT