What is the time difference between JST and COT?

Colombia Time (COT) is 14 hours behind Japan Standard Time (JST). JST uses a UTC offset of UTC+9, while COT uses UTC-5. For example, when it's 9:00 AM in JST, it's 7:00 PM in COT. This difference remains constant year-round since neither timezone observes daylight saving time. Use the conversion table above to see the exact time for each hour of the day.

How do I convert JST to COT?

To convert JST to COT, subtract 14 hours from the JST time. For example, 9:00 AM JST is 7:00 PM COT, and 5:00 PM JST is 3:00 AM COT. Since neither timezone observes DST, this conversion stays the same all year. You can also use the interactive converter above for quick, accurate results.

What time is it in COT when it's noon in JST?

When it's 12:00 PM (noon) in JST, it's 10:00 PM in COT. This is because COT is 14 hours behind JST. Similarly, when it's 6:00 PM in JST, it's 4:00 AM in COT. This relationship is constant throughout the year. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours behind is COT from JST?

COT is 14 hours behind JST. This means when it's 9:00 AM in JST, it's 7:00 PM in COT, and when it's midnight in JST, it's 10:00 AM in COT. This offset is constant throughout the year since neither timezone uses daylight saving time. The conversion table above provides a complete hour-by-hour mapping.

Is COT ahead or behind JST?

COT is behind JST by 14 hours. Clocks in COT show an earlier time than JST, meaning the day starts later in COT relative to JST. For example, when it's noon in JST, it's still 10:00 PM in COT. This difference stays the same year-round.

Does JST observe daylight saving time?

No, Japan Standard Time does not observe daylight saving time. The UTC offset of UTC+9 remains the same year-round, making time conversions from JST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does COT observe daylight saving time?

No, Colombia Time does not observe daylight saving time. The UTC offset of UTC-5 remains the same year-round, which simplifies time conversions. Regions using COT keep their clocks unchanged regardless of the season.

What is the best time to call from JST to COT?

The best time for a call between JST and COT is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in COT during their work day, call between 11:00 PM and 7:00 AM your JST time. Avoid calling too early or late, as the 14 hours difference means your evening could be their early morning. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

Do JST and COT ever have the same time?

No, JST and COT are always 14 hours apart and never display the same clock time simultaneously. Neither timezone observes DST, so the difference is constant year-round with no seasonal variation. The 14 hours offset is determined by their fixed positions relative to the Prime Meridian (UTC). You can always rely on this consistent difference when planning across these timezones.

JST to COT Converter

Convert Japan Standard Time to Colombia Time. See the hour-by-hour conversion table below.

Timezone Details

Japan Standard Time

11:58 AM

Friday, April 3, 2026

JST (UTC+09:00)

Bogota

9:58 PM

Thursday, April 2, 2026

Bogota (UTC-05:00)

Difference: -14 hours

JST DST: No

24-Hour Overview

JST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

Bogota — 24-hour overview

10a10a

11a

12p

1p1p

4p4p

7p7p

10p10p

11p

12a

1a1a

4a4a

7a7a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

COT to JST EST to JST JST to EST PST to JST JST to PST GMT to JST JST to GMT IST to JST JST to IST

Cities in These Timezones

JST Cities

Tokyo Osaka Fukuoka

COT Cities

Bogotá Medellín Cali

More Tools

Compare JST & COT Plan a Meeting (JST & COT)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Japan Standard Time on Wikipedia IANA Time Zone Database