IST is ahead of all US time zones. The difference ranges from 9.5 to 13.5 hours depending on the US time zone and whether Daylight Saving Time is in effect.
What is the time difference between IST and US Time?
The time difference between Indian Standard Time (IST) and US Time varies by time zone: IST is 10.5/9.5 hours ahead of EST/EDT, 11.5/10.5 hours ahead of CST/CDT, 12.5/11.5 hours ahead of MST/MDT, and 13.5/12.5 hours ahead of PST/PDT.