Current time in Mumbai

India · UTC+5:30

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Asia/Kolkata

UTC offset

UTC+5:30

Daylight Saving

No — not observed

Time zone ID

Asia/Kolkata

Business hours

9:30 AM – 6:30 PM IST (Monday–Friday)

About Mumbai's time zone

Mumbai follows India Standard Time (IST, UTC+5:30), one of only a handful of time zones in the world with a 30-minute offset from the hour. India uses a single time zone for its entire territory despite spanning nearly 30 degrees of longitude — a political decision made at independence for national unity. IST does not observe daylight saving time. Mumbai is 5.5 hours ahead of London and 10.5 hours ahead of New York (EST).

Best time to call Mumbai

Calling from	Recommended window
London	3:30 AM – 12:30 PM GMT
New York	10:30 PM – 7:30 AM ET
Dubai	7:30 AM – 4:30 PM GST
Singapore	11:30 AM – 8:30 PM SGT

Did you know? India's unusual UTC+5:30 time zone means that if you're scheduling a meeting between Mumbai and London, you'll never land on a round hour — it's always 30 minutes off. This quirk affects every piece of global scheduling software, and Indian tech workers joke that they're perpetually in a 'half-hour time zone.'

Cities in the same time zone