IST to East Helena Time Converter

Updating current time…
IST
India Standard Time
UTC+5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
East Helena
Montana, USAMDT
UTC−6
11h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
East Helena's clocks go back 1 hour on Sun, Nov 1 · MDT → MST

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Oct 26, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 26, 2026

IST is 11 hours and 30 minutes ahead of East Helena.

How the time difference changes

For most of the year, IST is 11 hours and 30 minutes ahead of East Helena. From Nov 1, 2026 to Mar 14, 2027, IST is 12 hours and 30 minutes ahead of East Helena.

For most of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 9:30 pm (previous day) to 6:30 am in East Helena. At other times of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 8:30 pm (previous day) to 5:30 am in East Helena.For most of the year, working hours of 09:00 to 18:00 in IST correspond to 21:30 (previous day) to 06:30 in East Helena. At other times of the year, working hours of 09:00 to 18:00 in IST correspond to 20:30 (previous day) to 05:30 in East Helena.

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

Time Difference

India Standard Time is 11 hours and 30 minutes ahead of MDT (Mountain Daylight Time).
5:30 pm17:30 in IST is 6:00 am06:00 in East Helena, MT, USA

IST to East Helena call time
Best time for a conference call or a meeting is between 7pm-8pm19:00-20:00 in IST which corresponds to 7:30am-8:30am07:30-08:30 in East Helena. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
6:00 am06:00 MDT (Mountain Daylight Time) (East Helena, MT, USA). Offset UTC -6:00 hours

5:30 pm17:30 IST / 6:00 am06:00 East Helena, MT, USA

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
ISTEast Helena, MT, USA
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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

East Helena Time Zone and Facts

Time Zone

Abbreviation / Offset
MDT – Mountain Daylight Time, UTC-6 (now, daylight saving time)
MST – Mountain Standard Time, UTC-7 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00: clocks go back 1 hour to 1:00 am01:00 (MST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (MDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

East Helena Facts

Country
USA
State
Montana
Population
2,057
Currency
Dollar (USD)
Geographic Coordinates
46° 35' N Latitude / 111° 54' W Longitude
International Dialing Code
+1
More About East Helena
East Helena local time and city facts