How do I convert SLST to IST?

To convert SLST to IST, use our free time converter tool. Enter the time in Sri Lanka Standard Time and instantly see the equivalent time in India Standard Time. The converter automatically accounts for Daylight Saving Time.

What time is it in Mumbai when it's noon in Colombo?

When it's 12:00 PM (noon) in Colombo (SLST), the time in Mumbai (IST) depends on the current UTC offset of both zones. Use our converter to get the exact current conversion.

SLST to IST Time Converter

Convert Sri Lanka Standard Time (SLST) to India Standard Time (IST). Both time zones are shown live below; current offset between them is same time.

Colombo · Sri Lanka Standard Time

13:26:04

Wednesday, May 6, 2026

GMT+5:30 · UTC+05:30

Mumbai · India Standard Time

13:26:04

Wednesday, May 6, 2026

GMT+5:30 · UTC+05:30

Convert a specific time

From: SLST (Colombo)

To: IST (Mumbai)

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Daylight Saving status right now

SLST (Sri Lanka Standard Time)

Observes DST: No

IST (India Standard Time)

Observes DST: No

When can SLST and IST meet?

8 hours of overlap during standard 9am-5pm working hours.

Best meeting window: 09:00–16:00 SLST (09:00–16:00 IST).

Hour-by-hour SLST to IST conversion table

SLST time (Colombo)	IST time (Mumbai)	Status
00:00 Wed	00:00 Wed	Off-hours both sides
01:00 Wed	01:00 Wed	Off-hours both sides
02:00 Wed	02:00 Wed	Off-hours both sides
03:00 Wed	03:00 Wed	Off-hours both sides
04:00 Wed	04:00 Wed	Off-hours both sides
05:00 Wed	05:00 Wed	Off-hours both sides
06:00 Wed	06:00 Wed	Off-hours both sides
07:00 Wed	07:00 Wed	Off-hours both sides
08:00 Wed	08:00 Wed	Off-hours both sides
09:00 Wed	09:00 Wed	Both at work
10:00 Wed	10:00 Wed	Both at work
11:00 Wed	11:00 Wed	Both at work
12:00 Wed	12:00 Wed	Both at work
13:00 Wed	13:00 Wed	Both at work
14:00 Wed	14:00 Wed	Both at work
15:00 Wed	15:00 Wed	Both at work
16:00 Wed	16:00 Wed	Both at work
17:00 Wed	17:00 Wed	Off-hours both sides
18:00 Wed	18:00 Wed	Off-hours both sides
19:00 Wed	19:00 Wed	Off-hours both sides
20:00 Wed	20:00 Wed	Off-hours both sides
21:00 Wed	21:00 Wed	Off-hours both sides
22:00 Wed	22:00 Wed	Off-hours both sides
23:00 Wed	23:00 Wed	Off-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Sri Lanka Standard Time (SLST)

IANA identifier: Asia/Colombo
Current UTC offset: UTC+05:30
Current abbreviation: GMT+5:30

Major cities in this zone

Colombo

India Standard Time (IST)

IANA identifier: Asia/Kolkata
Current UTC offset: UTC+05:30
Current abbreviation: GMT+5:30

Major cities in this zone

MumbaiNew DelhiBangaloreChennaiKolkata

Sun today in Colombo and Mumbai

Mumbai

Sunrise

06:09

Sunset

19:03

Solar noon

12:36

Daylight

12h 54m

Related converters

IST to SLST (reverse)SLST to EST SLST to PST SLST to GMT SLST to UTC SLST to CET EST to IST PST to IST GMT to IST UTC to IST CET to IST

Looking for local time? See time in Colombo or time in Mumbai.

Frequently asked questions

What is the time difference between SLST and IST right now?+

IST (India Standard Time) is currently same time SLST (Sri Lanka Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.

Does SLST or IST observe daylight saving time?+

SLST: does not observe daylight saving time. IST: does not observe daylight saving time.

When is the best time to schedule a meeting between SLST and IST?+

The strongest overlap is 09:00–16:00 SLST (09:00–16:00 IST), giving 8 hours when both sides are within standard 9am-5pm working hours.

What time is it in Mumbai when it is 12:00 noon in Colombo?+

When it is 12:00 Wed in Colombo (SLST), it is 12:00 Wed in Mumbai (IST).

Which IANA time zone identifiers are used for SLST and IST?+

SLST maps to "Asia/Colombo" in the IANA database. IST maps to "Asia/Kolkata". These identifiers are what most software libraries use to convert times accurately, including DST handling.