CRT to GMT Time Converter

Convert Costa Rica Time (CRT) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is 7 hours ahead.

San José · Costa Rica Time
00:14:08
Wednesday, May 13, 2026
CST · UTC-06:00
London · Greenwich Mean Time
07:14:08
Wednesday, May 13, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: CRT (San José)
To: GMT (London)
--:--

Daylight Saving status right now

CRT (Costa Rica Time)
Observes DST
No
GMT (Greenwich Mean Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-10-25
Offset shift
UTC+01:00 → UTC+00:00

Heads up: GMT observes DST while CRT does not. The 7-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can CRT and GMT 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
GMT
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.
1 hour of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–09:00 CRT (16:00–16:00 GMT).

Hour-by-hour CRT to GMT conversion table

CRT time (San José)GMT time (London)Status
00:00 Wed07:00 WedOff-hours both sides
01:00 Wed08:00 WedOff-hours both sides
02:00 Wed09:00 WedGMT working
03:00 Wed10:00 WedGMT working
04:00 Wed11:00 WedGMT working
05:00 Wed12:00 WedGMT working
06:00 Wed13:00 WedGMT working
07:00 Wed14:00 WedGMT working
08:00 Wed15:00 WedGMT working
09:00 Wed16:00 WedBoth at work
10:00 Wed17:00 WedCRT working
11:00 Wed18:00 WedCRT working
12:00 Wed19:00 WedCRT working
13:00 Wed20:00 WedCRT working
14:00 Wed21:00 WedCRT working
15:00 Wed22:00 WedCRT working
16:00 Wed23:00 WedCRT working
17:00 Wed00:00 ThuOff-hours both sides
18:00 Wed01:00 ThuOff-hours both sides
19:00 Wed02:00 ThuOff-hours both sides
20:00 Wed03:00 ThuOff-hours both sides
21:00 Wed04:00 ThuOff-hours both sides
22:00 Wed05:00 ThuOff-hours both sides
23:00 Wed06:00 ThuOff-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

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
Greenwich Mean Time (GMT)
IANA identifier
Europe/London
Current UTC offset
UTC+01:00
Current abbreviation
GMT+1
Major cities in this zone
LondonManchesterEdinburghBirmingham

Sun today in San José and London

London
Sunrise
05:13
Sunset
20:43
Solar noon
12:58
Daylight
15h 29m

Related converters

GMT to CRT (reverse)CRT to ESTCRT to PSTCRT to UTCCRT to CETCRT to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in San José or time in London.

Frequently asked questions

What is the time difference between CRT and GMT right now?+
GMT (Greenwich Mean Time) is currently 7 hours 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 GMT observe daylight saving time?+
CRT: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between CRT and GMT?+
The strongest overlap is 09:00–09:00 CRT (16:00–16:00 GMT), giving 1 hour when both sides are within standard 9am-5pm working hours.
What time is it in London when it is 12:00 noon in San José?+
When it is 12:00 Wed in San José (CRT), it is 19:00 Wed in London (GMT).
Which IANA time zone identifiers are used for CRT and GMT?+
CRT maps to "America/Costa_Rica" in the IANA database. GMT maps to "Europe/London". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is San José ahead of or behind London?+
Whether San José (CRT) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is 7 hours 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 GMT?+
CRT is UTC-06:00 (CST) and GMT is UTC+01:00 (GMT+1). 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 GMT?+
Yes. There are 1 hour of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–09:00 CRT.