COT to CHAST Time Converter

Convert Colombia Time (COT) to Chatham Standard Time (CHAST). Both time zones are shown live below; current offset between them is 17h 45m ahead.

Bogotá · Colombia Time
13:30:47
Wednesday, May 20, 2026
GMT-5 · UTC-05:00
Chatham Islands · Chatham Standard Time
07:15:47
Thursday, May 21, 2026
GMT+12:45 · UTC+12:45

Convert a specific time

From: COT (Bogotá)
To: CHAST (Chatham Islands)
--:--

Daylight Saving status right now

COT (Colombia Time)
Observes DST
No
CHAST (Chatham Standard Time)
Observes DST
Yes
In DST right now
No
Next spring forward
2026-09-27
Offset shift
UTC+12:45 → UTC+13:45

Heads up: CHAST observes DST while COT does not. The 17.75-hour difference shown above will shift by one hour when CHAST starts or ends DST.

When can COT and CHAST meet?

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01
02
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09
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COT
CHAST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Bogotá (COT). 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: 16:00–16:00 COT (09:45–09:45 CHAST).

Hour-by-hour COT to CHAST conversion table

COT time (Bogotá)CHAST time (Chatham Islands)Status
00:00 Wed17:45 WedOff-hours both sides
01:00 Wed18:45 WedOff-hours both sides
02:00 Wed19:45 WedOff-hours both sides
03:00 Wed20:45 WedOff-hours both sides
04:00 Wed21:45 WedOff-hours both sides
05:00 Wed22:45 WedOff-hours both sides
06:00 Wed23:45 WedOff-hours both sides
07:00 Wed00:45 ThuOff-hours both sides
08:00 Wed01:45 ThuOff-hours both sides
09:00 Wed02:45 ThuCOT working
10:00 Wed03:45 ThuCOT working
11:00 Wed04:45 ThuCOT working
12:00 Wed05:45 ThuCOT working
13:00 Wed06:45 ThuCOT working
14:00 Wed07:45 ThuCOT working
15:00 Wed08:45 ThuCOT working
16:00 Wed09:45 ThuBoth at work
17:00 Wed10:45 ThuCHAST working
18:00 Wed11:45 ThuCHAST working
19:00 Wed12:45 ThuCHAST working
20:00 Wed13:45 ThuCHAST working
21:00 Wed14:45 ThuCHAST working
22:00 Wed15:45 ThuCHAST working
23:00 Wed16:45 ThuCHAST 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

Colombia Time (COT)
IANA identifier
America/Bogota
Current UTC offset
UTC-05:00
Current abbreviation
GMT-5
Major cities in this zone
BogotáMedellín
Chatham Standard Time (CHAST)
IANA identifier
Pacific/Chatham
Current UTC offset
UTC+12:45
Current abbreviation
GMT+12:45
Major cities in this zone
Chatham Islands

Related converters

CHAST to COT (reverse)COT to ESTCOT to PSTCOT to GMTCOT to UTCCOT to CETEST to CHASTPST to CHASTGMT to CHASTUTC to CHASTCET to CHAST
Looking for local time? See time in Bogotá or time in Chatham Islands.

Frequently asked questions

What is the time difference between COT and CHAST right now?+
CHAST (Chatham Standard Time) is currently 17h 45m ahead COT (Colombia Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does COT or CHAST observe daylight saving time?+
COT: does not observe daylight saving time. CHAST: observes daylight saving time.
When is the best time to schedule a meeting between COT and CHAST?+
The strongest overlap is 16:00–16:00 COT (09:45–09:45 CHAST), giving 1 hour when both sides are within standard 9am-5pm working hours.
What time is it in Chatham Islands when it is 12:00 noon in Bogotá?+
When it is 12:00 Wed in Bogotá (COT), it is 05:45 Thu in Chatham Islands (CHAST).
Which IANA time zone identifiers are used for COT and CHAST?+
COT maps to "America/Bogota" in the IANA database. CHAST maps to "Pacific/Chatham". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Bogotá ahead of or behind Chatham Islands?+
Whether Bogotá (COT) is ahead of or behind Chatham Islands (CHAST) depends on the current UTC offsets. Right now CHAST is 17h 45m ahead COT. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for COT and CHAST?+
COT is UTC-05:00 (GMT-5) and CHAST is UTC+12:45 (GMT+12:45). 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 COT and CHAST?+
Yes. There are 1 hour of overlap during standard 9am-5pm working hours, with the strongest window at 16:00–16:00 COT.