Why does India use a half-hour offset? IST explained — UTC+5:30, no DST, and how it affects global scheduling.
IST = UTC+5:30 — a unique 30-minute offset used by 1.4 billion people.
At independence in 1947, India chose the midpoint between UTC+5 and UTC+6 to keep one national timezone.
India NEVER changes its clocks. IST = UTC+5:30 on every single day of the year — 365 days.
IST is 10.5 hours ahead of EST.9 AM EST = 7:30 PM ISTGreat for morning US/India calls!
IST is 5.5 hours ahead of GMT.Morning London = late afternoon India.
Use DCTIMEZONE to instantly convert any time to India Standard Time.