World Timezones

IST to MST Converter

Compare MST to IST instead

Search above to add a time zone or city

Offset

11.5 hours

India Standard Time (IST) is currently ahead of Mountain Time (MST).

IST: UTC+5:30

MST: UTC-6

Mountain Time is currently observing daylight saving time; India Standard Time is not.

When to schedule

Standard business hours (9 AM–5 PM, Mon–Fri) in India Standard Time and Mountain Time don't overlap on the same weekday. Mountain Time is 11 hours behind India Standard Time.

Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.

This window may shift by an hour during daylight saving time.

About these zones

India Standard Time is also known as IST.

Mountain Time is also known as MST, or MDT.

India Standard Time and Mountain Time are approximately 8,350 miles apart.

Quick reference

Full 24-hour conversion table.

ISTMSTDay
12:00 am12:30 pm-1 day
1:00 am1:30 pm-1 day
2:00 am2:30 pm-1 day
3:00 am3:30 pm-1 day
4:00 am4:30 pm-1 day
5:00 am5:30 pm-1 day
6:00 am6:30 pm-1 day
7:00 am7:30 pm-1 day
8:00 am8:30 pm-1 day
9:00 am9:30 pm-1 day
10:00 am10:30 pm-1 day
11:00 am11:30 pm-1 day
12:00 pm12:30 amSame day
1:00 pm1:30 amSame day
2:00 pm2:30 amSame day
3:00 pm3:30 amSame day
4:00 pm4:30 amSame day
5:00 pm5:30 amSame day
6:00 pm6:30 amSame day
7:00 pm7:30 amSame day
8:00 pm8:30 amSame day
9:00 pm9:30 amSame day
10:00 pm10:30 amSame day
11:00 pm11:30 amSame day

Daylight saving time

Mountain Time observes daylight saving time; India Standard Time does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.

Daylight today

India Standard Time
Sunrise
6:02 AM
Sunset
7:11 PM
Day length
13h 9m
Mountain Time
Sunrise
5:37 AM
Sunset
8:19 PM
Day length
14h 41m

Daylight overlap: 2h 4m — 5:07 PM–7:11 PM in India Standard Time (5:37 AM–7:41 AM in Mountain Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Mountain Time

Airports in these zones

Airports in India Standard Time

  • BOM
  • NMI
  • DEL
  • BLR
  • HYD
  • AMD
  • MAA
  • CCU
  • STV
  • PNQ

Airports in Mountain Time

  • BJC
  • DEN
  • OGD
  • SLC

Related conversions