What timezone does Mumbai use?

Mumbai uses the Asia/Kolkata IANA timezone, which corresponds to India Standard Time (IST), permanently fixed at UTC+5:30. The entire country of India uses a single timezone with a 30-minute offset from the hour.

Does Mumbai observe daylight saving time?

No. India and Mumbai have never observed daylight saving time. The clock stays at UTC+5:30 year-round, making scheduling with Mumbai straightforward — the offset never shifts.

Why is India's UTC offset UTC+5:30 instead of a full hour?

India adopted a single national timezone in 1947 set to the longitude of roughly the geographic center of the country. That position corresponds to UTC+5:30, which is a half-hour offset. Several countries worldwide use 15- or 30-minute offsets from the hour.

Is this clock accurate?

The tool uses your device's system clock and the browser's built-in Intl API to convert to Asia/Kolkata. Accuracy depends on your device clock, which is typically synchronized via NTP and accurate to within a second.

Does this tool make any network requests?

No. All computation happens in your browser using the Intl.DateTimeFormat API. No network request is made after the page loads.

How far ahead of UTC is Mumbai?

Mumbai is exactly 5 hours and 30 minutes ahead of UTC (Coordinated Universal Time), written as UTC+5:30. This offset is constant throughout the year.

Current Time in Mumbai

Name: Current Time in Mumbai
Availability: InStock
Author: Nham Vu

See the live current time in Mumbai, India — IST (UTC+5:30) year-round with no daylight saving — and compare it to any major timezone.

Mumbai, India

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IST · UTC+5:30

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No daylight saving time

Your UTC offset

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Difference from you

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Current UTC Time

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Compare with another timezone

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Mumbai time

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Mumbai timezone facts

IANA timezone: Asia/Kolkata
UTC offset: UTC+5:30 (fixed, year-round)
Timezone name: India Standard Time (IST)
Daylight saving: None — offset never changes

Summary

See the live current time in Mumbai, India — IST (UTC+5:30) year-round with no daylight saving — and compare it to any major timezone.

How it works

Your browser reads the current UTC timestamp from the system clock.
The Intl.DateTimeFormat API converts it to the Asia/Kolkata timezone (UTC+5:30).
The live clock updates every second on your screen.
The UTC+5:30 offset is constant — India does not observe daylight saving time.
Select any timezone from the comparison dropdown to see the equivalent time side-by-side.

Use cases

Schedule a meeting or call with a contact in Mumbai or anywhere in India.
Check whether Mumbai business hours overlap with your local time.
Convert your local time to IST for travel planning to India.
Verify the exact UTC offset when building or debugging time-sensitive applications.
Confirm the current date in Mumbai when you are in a different calendar day.
Compare Mumbai time with colleagues across multiple global cities at once.
Look up IST when coordinating with Indian software development teams.
Plan live events, webinars, or broadcasts across India Standard Time.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu