YAPT to GMT Time Converter

Convert Yap Time (YAPT) to Greenwich Mean Time (GMT). Both time zones are shown live below; current offset between them is 9 hours behind.

Colonia · Yap Time
15:51:18
Thursday, May 21, 2026
GMT+10 · UTC+10:00
London · Greenwich Mean Time
06:51:18
Thursday, May 21, 2026
GMT+1 · UTC+01:00

Convert a specific time

From: YAPT (Colonia)
To: GMT (London)
--:--

Daylight Saving status right now

YAPT (Yap 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 YAPT does not. The 9-hour difference shown above will shift by one hour when GMT starts or ends DST.

When can YAPT and GMT meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
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17
18
19
20
21
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23
YAPT
GMT
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Colonia (YAPT). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 17:00–18:00 YAPT (08:00–09:00 GMT).

Hour-by-hour YAPT to GMT conversion table

YAPT time (Colonia)GMT time (London)Status
00:00 Thu15:00 WedGMT working
01:00 Thu16:00 WedGMT working
02:00 Thu17:00 WedOff-hours both sides
03:00 Thu18:00 WedOff-hours both sides
04:00 Thu19:00 WedOff-hours both sides
05:00 Thu20:00 WedOff-hours both sides
06:00 Thu21:00 WedOff-hours both sides
07:00 Thu22:00 WedOff-hours both sides
08:00 Thu23:00 WedOff-hours both sides
09:00 Thu00:00 ThuYAPT working
10:00 Thu01:00 ThuYAPT working
11:00 Thu02:00 ThuYAPT working
12:00 Thu03:00 ThuYAPT working
13:00 Thu04:00 ThuYAPT working
14:00 Thu05:00 ThuYAPT working
15:00 Thu06:00 ThuYAPT working
16:00 Thu07:00 ThuYAPT working
17:00 Thu08:00 ThuOff-hours both sides
18:00 Thu09:00 ThuGMT working
19:00 Thu10:00 ThuGMT working
20:00 Thu11:00 ThuGMT working
21:00 Thu12:00 ThuGMT working
22:00 Thu13:00 ThuGMT working
23:00 Thu14:00 ThuGMT 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

Yap Time (YAPT)
IANA identifier
Pacific/Yap
Current UTC offset
UTC+10:00
Current abbreviation
GMT+10
Major cities in this zone
Colonia
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 Colonia and London

London
Sunrise
05:02
Sunset
20:54
Solar noon
12:58
Daylight
15h 52m

Related converters

GMT to YAPT (reverse)YAPT to ESTYAPT to PSTYAPT to UTCYAPT to CETYAPT to ISTEST to GMTPST to GMTUTC to GMTCET to GMTIST to GMT
Looking for local time? See time in Colonia or time in London.

Frequently asked questions

What is the time difference between YAPT and GMT right now?+
GMT (Greenwich Mean Time) is currently 9 hours behind YAPT (Yap Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does YAPT or GMT observe daylight saving time?+
YAPT: does not observe daylight saving time. GMT: observes daylight saving time.
When is the best time to schedule a meeting between YAPT and GMT?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 17:00–18:00 YAPT (08:00–09:00 GMT).
What time is it in London when it is 12:00 noon in Colonia?+
When it is 12:00 Thu in Colonia (YAPT), it is 03:00 Thu in London (GMT).
Which IANA time zone identifiers are used for YAPT and GMT?+
YAPT maps to "Pacific/Yap" 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 Colonia ahead of or behind London?+
Whether Colonia (YAPT) is ahead of or behind London (GMT) depends on the current UTC offsets. Right now GMT is 9 hours behind YAPT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for YAPT and GMT?+
YAPT is UTC+10:00 (GMT+10) 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 YAPT and GMT?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between YAPT and GMT is 17:00–18:00 YAPT.