World Timezones

JST to COT Converter

Compare COT to JST instead
Japan Standard Time1:36 pmFri, Jun 5
Japan Standard TimeJST
Asia · UTC+9
1:36 pmFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
Colombia TimeCOT
South America · UTC-5
11:36 pmThu, Jun 4
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a

Offset

The time difference between Japan Standard Time and Colombia Time is 14 hours.

14 hours

Japan Standard Time (JST) is ahead of Colombia Time (COT).

JST: UTC+9

COT: UTC-5

Neither Japan Standard Time nor Colombia Time is currently observing daylight saving time.

When to schedule

Standard business hours (9 AM–5 PM, Mon–Fri) in Japan Standard Time and Colombia Time don't overlap on the same weekday. Colombia Time is 14 hours behind Japan Standard Time.

Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

Japan

  • New Year's DayThu, Jan 1
  • Coming of Age DayMon, Jan 12
  • Foundation DayWed, Feb 11
  • The Emperor's BirthdayMon, Feb 23
  • Vernal Equinox DayFri, Mar 20
  • Shōwa DayWed, Apr 29
  • Constitution Memorial DayWed, May 6
  • Greenery DayMon, May 4
  • Children's DayTue, May 5
  • Marine DayMon, Jul 20
  • Mountain DayTue, Aug 11
  • Respect for the Aged DayMon, Sep 21
  • Autumnal Equinox DayWed, Sep 23
  • Sports DayMon, Oct 12
  • Culture DayTue, Nov 3
  • Labour Thanksgiving DayMon, Nov 23

Colombia

  • New Year's DayThu, Jan 1
  • EpiphanyMon, Jan 12
  • Saint Joseph's DayMon, Mar 23
  • Maundy ThursdayThu, Apr 2
  • Good FridayFri, Apr 3
  • Labour DayFri, May 1
  • Ascension DayMon, May 18
  • Corpus ChristiMon, Jun 8
  • Sacred HeartMon, Jun 15
  • Saint Peter and Saint PaulMon, Jun 29
  • Declaration of IndependenceMon, Jul 20
  • Battle of BoyacáFri, Aug 7
  • Assumption of MaryMon, Aug 17
  • Columbus DayMon, Oct 12
  • All Saints’ DayMon, Nov 2
  • Independence of CartagenaMon, Nov 16
  • Immaculate ConceptionTue, Dec 8
  • Christmas DayFri, Dec 25

About these zones

Japan Standard Time is also known as JST. To call Japan, dial +81.

Colombia Time is also known as COT. To call Colombia, dial +57.

Colombia Time is approximately 8,900 miles northeast of Japan Standard Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

JSTCOTDay
12:00 am10:00 am-1 day
1:00 am11:00 am-1 day
2:00 am12:00 pm-1 day
3:00 am1:00 pm-1 day
4:00 am2:00 pm-1 day
5:00 am3:00 pm-1 day
6:00 am4:00 pm-1 day
7:00 am5:00 pm-1 day
8:00 am6:00 pm-1 day
9:00 am7:00 pm-1 day
10:00 am8:00 pm-1 day
11:00 am9:00 pm-1 day
12:00 pm10:00 pm-1 day
1:00 pm11:00 pm-1 day
2:00 pm12:00 amSame day
3:00 pm1:00 amSame day
4:00 pm2:00 amSame day
5:00 pm3:00 amSame day
6:00 pm4:00 amSame day
7:00 pm5:00 amSame day
8:00 pm6:00 amSame day
9:00 pm7:00 amSame day
10:00 pm8:00 amSame day
11:00 pm9:00 amSame day

Daylight saving time

Neither Japan Standard Time nor Colombia Time observes daylight saving time. The offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Japan Standard Time
Sunrise
4:27 AM
Sunset
6:55 PM
Day length
14h 28m
Colombia Time
Sunrise
5:44 AM
Sunset
6:07 PM
Day length
12h 23m

Daylight overlap: 3h 40m — 4:27 AM–8:07 AM in Japan Standard Time (2:27 PM–6:07 PM in Colombia Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Colombia Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Japan Standard Time

  • HND
  • NRT
  • ITM
  • KIX
  • UKB
  • NGO
  • NKM
  • CTS
  • OKD
  • FUK

Airports in Colombia Time

  • BOG
  • CLO
  • EOH
  • MDE

Related conversions

Common conversions

What is 9:00 am JST in COT?
9:00 am JST is 7:00 pm COT, the previous day.
What is 12:00 pm JST in COT?
12:00 pm JST is 10:00 pm COT, the previous day.
What is 12:30 pm JST in COT?
12:30 pm JST is 10:30 pm COT, the previous day.
What is 2:00 pm JST in COT?
2:00 pm JST is 12:00 am COT.
What is 5:00 pm JST in COT?
5:00 pm JST is 3:00 am COT.
What is 11:30 pm JST in COT?
11:30 pm JST is 9:30 am COT.