★ TIME & DATE · WORLD CLOCK · MUMBAI
Noon on January 15, 2027 in Mumbai is 06:30 UTC and 01:30 EST the same day in New York. Enter a Mumbai date and time to get the matching UTC and US times, with the date shown for each zone.
Mumbai runs on India Standard Time, one time zone for the whole of India, with no daylight saving. Enter a Mumbai date and time and the converter shows what time it is in UTC and across the United States — including when the date flips on the US west coast.
India Standard Time (IST) is UTC+5:30 all year, from Mumbai in the west to Kolkata in the east, and India has no daylight saving time. That makes conversion simple on the Mumbai side: subtract 5 hours and 30 minutes to get UTC, every day of the year, with no spring-forward or fall-back to track. The half hour is the part people get wrong: IST is not a whole-hour offset, so a round Mumbai hour always lands on a half hour in UTC. The complication is entirely on the American side, where the US zones shift with daylight saving while Mumbai does not, so the gap between Mumbai and New York is 10 hours 30 minutes in the northern winter and 9 hours 30 minutes in the summer. A noon meeting in Mumbai is therefore 01:30 the same morning in New York in January, but 02:30 the same morning in July.
Mumbai is 9 hours 30 minutes to 15 hours 30 minutes ahead of the US zones, so a Mumbai daytime is usually the same US morning in the east and the previous US evening in the west. That split is the most common scheduling mistake with Mumbai: the same converted time can fall on two different US dates depending on the zone, so always read the date beside each converted time, not just the hour. One more trap: the letters IST are also used for Irish Standard Time, which is Ireland's summer daylight-saving time (UTC+1) and has nothing to do with India. On this page, IST means India Standard Time only. If a schedule says IST in an Irish context, it is a different clock entirely.
| Output | Formula | What it means |
|---|---|---|
| UTC time | IST − 5 hours 30 minutes | 12:00 IST = 06:30 UTC, year-round. |
| Eastern time | UTC − 5 hours (winter) or 4 hours (summer) | 01:30 EST Jan 15 in winter, 02:30 EDT Jul 15 in summer. |
| Central time | UTC − 6 hours (winter) or 5 hours (summer) | 00:30 CST Jan 15 in winter, 01:30 CDT Jul 15 in summer. |
| Mountain time | UTC − 7 hours (winter) or 6 hours (summer) | 23:30 MST Jan 14 in winter, 00:30 MDT Jul 15 in summer. |
| Pacific time | UTC − 8 hours (winter) or 7 hours (summer) | 22:30 PST Jan 14 in winter, 23:30 PDT Jul 14 in summer. |
| Hawaii time | UTC − 10 hours, year-round | 20:30 HST on the previous day, winter and summer alike. |
IST is UTC+5:30 with no daylight saving, so the Mumbai side of every conversion is exact, and this converter reads its time-zone data from the browser's Intl database rather than any hand-coded offset. US times follow the daylight-saving rules in force on the entered date; if those rules ever change by law, results for dates after the change depend on an updated browser. On this page, IST means India Standard Time only — Irish Standard Time is a different, summer-only Irish clock and must not be confused with it. This page is the Mumbai city entry point; Mumbai shares IST with all of India, so the same conversion applies in Delhi, Bengaluru, and Kolkata, and the country-level IST converter covers the same rule in a national framing.
Bright Side Kit. "Mumbai Time Converter: IST to UTC and US Time Zones." https://brightoolbox.com/mumbai-time-converter/ Accessed October 24, 2026.India Standard Time (IST), UTC+5:30, shared with all of India, all year. Mumbai has no separate city time zone and India observes no daylight saving time.
No. India has no daylight saving time, so IST stays at UTC+5:30 through both summer and winter. The US side shifts instead, which changes the gap by one hour between seasons.
06:30 UTC, year-round: subtract 5 hours and 30 minutes from IST. Noon on January 15, 2027 in Mumbai is 06:30 UTC on January 15.
It depends on the season: 01:30 EST the same day in the northern winter, and 02:30 EDT the same day in the summer. Mumbai does not shift, so the US daylight-saving change moves the answer by an hour.
Because Mumbai is far enough ahead that a Mumbai midday is already the previous evening in Mountain, Pacific, and Hawaii zones. Eastern and Central zones, being closer, usually show the same date for a Mumbai noon.
On this page, IST means India Standard Time (UTC+5:30, year-round). Irish Standard Time is Ireland's summer daylight-saving clock (UTC+1) and is an entirely different time; do not mix them up.
Hawaii is 15 hours 30 minutes behind Mumbai all year, because neither place observes daylight saving. Noon in Mumbai is always 20:30 the previous day in Honolulu.
This page is the Mumbai city entry point: it frames the conversion around Mumbai, with Mumbai examples like a 10:00 business call and a 15:30 flight landing. The IST page covers the same national rule in a country framing; the times agree.