CRT to IST Time Converter

Convert Costa Rica Time (CRT) to India Standard Time (IST). Both time zones are shown live below; current offset between them is 11h 30m ahead.

San José · Costa Rica Time
01:45:10
Monday, May 11, 2026
CST · UTC-06:00
Mumbai · India Standard Time
13:15:10
Monday, May 11, 2026
GMT+5:30 · UTC+05:30

Convert a specific time

From: CRT (San José)
To: IST (Mumbai)
--:--

Daylight Saving status right now

CRT (Costa Rica Time)
Observes DST
No
IST (India Standard Time)
Observes DST
No

When can CRT and IST meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
CRT
IST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in San José (CRT). Each row shows the local working-hours state in that zone for the same moment in time.
No business-hours overlap exists between CRT and IST.
The two zones are too far apart for synchronous meetings during normal working hours. Plan async or schedule outside 9-5 on at least one side.

Hour-by-hour CRT to IST conversion table

CRT time (San José)IST time (Mumbai)Status
00:00 Mon11:30 MonIST working
01:00 Mon12:30 MonIST working
02:00 Mon13:30 MonIST working
03:00 Mon14:30 MonIST working
04:00 Mon15:30 MonIST working
05:00 Mon16:30 MonIST working
06:00 Mon17:30 MonOff-hours both sides
07:00 Mon18:30 MonOff-hours both sides
08:00 Mon19:30 MonOff-hours both sides
09:00 Mon20:30 MonCRT working
10:00 Mon21:30 MonCRT working
11:00 Mon22:30 MonCRT working
12:00 Mon23:30 MonCRT working
13:00 Mon00:30 TueCRT working
14:00 Mon01:30 TueCRT working
15:00 Mon02:30 TueCRT working
16:00 Mon03:30 TueCRT working
17:00 Mon04:30 TueOff-hours both sides
18:00 Mon05:30 TueOff-hours both sides
19:00 Mon06:30 TueOff-hours both sides
20:00 Mon07:30 TueOff-hours both sides
21:00 Mon08:30 TueOff-hours both sides
22:00 Mon09:30 TueIST working
23:00 Mon10:30 TueIST working

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

Costa Rica Time (CRT)
IANA identifier
America/Costa_Rica
Current UTC offset
UTC-06:00
Current abbreviation
CST
Major cities in this zone
San José
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 San José and Mumbai

Mumbai
Sunrise
06:06
Sunset
19:05
Solar noon
12:36
Daylight
12h 58m

Related converters

IST to CRT (reverse)CRT to ESTCRT to PSTCRT to GMTCRT to UTCCRT to CETEST to ISTPST to ISTGMT to ISTUTC to ISTCET to IST
Looking for local time? See time in San José or time in Mumbai.

Frequently asked questions

What is the time difference between CRT and IST right now?+
IST (India Standard Time) is currently 11h 30m ahead CRT (Costa Rica Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does CRT or IST observe daylight saving time?+
CRT: does not observe daylight saving time. IST: does not observe daylight saving time.
When is the best time to schedule a meeting between CRT and IST?+
CRT and IST have no business-hour overlap, even at the edges of a typical workday. Async collaboration or non-9-5 scheduling is the practical choice.
What time is it in Mumbai when it is 12:00 noon in San José?+
When it is 12:00 Mon in San José (CRT), it is 23:30 Mon in Mumbai (IST).
Which IANA time zone identifiers are used for CRT and IST?+
CRT maps to "America/Costa_Rica" in the IANA database. IST maps to "Asia/Kolkata". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is San José ahead of or behind Mumbai?+
Whether San José (CRT) is ahead of or behind Mumbai (IST) depends on the current UTC offsets. Right now IST is 11h 30m ahead CRT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for CRT and IST?+
CRT is UTC-06:00 (CST) and IST is UTC+05:30 (GMT+5:30). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both CRT and IST?+
No standard business-hours overlap exists between CRT and IST. Plan asynchronous work or schedule outside 9-5 on at least one side.