- How many hours ahead is India of the US?
- India Standard Time (IST) is UTC+5:30 and never changes, because India does not observe daylight saving. So India is 9.5 hours ahead of US Eastern Time when the US is on daylight time (spring to autumn) and 10.5 hours ahead when the US is on standard time (autumn to spring). Against US Pacific Time the gap is 12.5 and 13.5 hours respectively. This tool uses your browser's live time-zone data, so it accounts for that automatically.
- Why does the time difference change during the year?
- Because the US moves its clocks for daylight saving time twice a year but India does not. When US clocks spring forward in March the gap with India shrinks by an hour, and when they fall back in November it grows by an hour. India's IST stays fixed at UTC+5:30 all year.
- What is the best time to call India from the US?
- For a comfortable evening call in India (roughly 8–10pm IST), that is about 9:30–11:30am US Eastern or 6:30–8:30am US Pacific during US standard time, shifting an hour earlier during US daylight time. Use the converter above to check the exact times for today.
- Does India have more than one time zone?
- No. Unlike the continental US, which spans four main time zones, all of India uses a single time zone, India Standard Time (IST, UTC+5:30), from Gujarat to the north-east.