IST to X Converter

Updating current time…
IST
India Standard Time
UTC+5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
X
X-ray Time Zone
UTC−11
16h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 21, 2026 = 1:00 am01:00 X (UTC-11), Oct 21, 2026

IST is 16 hours and 30 minutes ahead of X.

IST and X examples

These examples always use IST (UTC+5:30) and X (UTC-11). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IST is 16 hours and 30 minutes ahead of X.

How the time difference changes

IST is 16 hours and 30 minutes ahead of X year-round.

Working hours of 9:00 am to 6:00 pm in IST correspond to 4:30 pm (previous day) to 1:30 am in X.Working hours of 09:00 to 18:00 in IST correspond to 16:30 (previous day) to 01:30 in X.

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

Time Difference

India Standard Time is 16 hours and 30 minutes ahead of X-ray Time Zone.
5:30 pm17:30 in IST is 1:00 am01:00 in X

IST to X call time
Best time for a conference call or a meeting is between 9am-10:30am09:00-10:30 in IST which corresponds to 4:30pm-6pm16:30-18:00 in X (previous day)

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
1:00 am01:00 X-ray Time Zone (X). Offset UTC -11:00 hours

5:30 pm17:30 IST / 1:00 am01:00 X

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ISTX
7:30am previous day
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India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

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, Bengaluru, Hyderabad, Ahmedabad.

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; see upcoming clock changes worldwide.

Current time in India: India time now

Map of the areas on India Standard Time (IST)
IST all year

Open the world time zone map© OpenStreetMap

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

X-ray Time Zone

Offset: X is 11 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: American Samoa, Niue, United States Minor Outlying Islands

Principal Cities: The largest city in the X time zone is Pago Pago in American Samoa, with about 11,500 people. Other major cities in this time zone include Tāfuna, Nu‘uuli, Leone, Faleniu.

Daylight Saving: Clocks in X-ray Time Zone (X) do not change for daylight saving time, so X stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on X-ray Time Zone (X)
X all year

Open the world time zone map© OpenStreetMap

X 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 an offset of eleven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • X-ray - Military abbreviation for X
  • X - short form of 'X-ray'
Time zones with the GMT -11 offset:
  • NUT - Niue Time
  • SST - Samoa Standard Time
  • X - X-ray Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT