What is the time difference between COT and JST?

Japan Standard Time (JST) is 14 hours ahead of Colombia Time (COT). COT uses a UTC offset of UTC-5, while JST uses UTC+9. For example, when it's 9:00 AM in COT, it's 11:00 PM in JST. 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 COT to JST?

To convert COT to JST, add 14 hours to the COT time. For example, 9:00 AM COT is 11:00 PM JST, and 5:00 PM COT is 7:00 AM JST. 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 JST when it's noon in COT?

When it's 12:00 PM (noon) in COT, it's 2:00 AM in JST. This is because JST is 14 hours ahead of COT. Similarly, when it's 6:00 PM in COT, it's 8:00 AM in JST. This relationship is constant throughout the year. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is JST from COT?

JST is 14 hours ahead of COT. This means when it's 9:00 AM in COT, it's 11:00 PM in JST, and when it's midnight in COT, it's 2:00 PM in JST. 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 JST ahead or behind COT?

JST is ahead of COT by 14 hours. Clocks in JST show a later time than COT, meaning the day starts earlier in JST relative to COT. For example, when it's morning in COT, it's already afternoon or evening in JST. This difference stays the same year-round.

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.

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 to JST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

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

The best time for a call between COT and JST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in JST during their work day, call between 7:00 PM and 3:00 AM your COT time. Avoid calling too early or late, as the 14 hours difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

Do COT and JST ever have the same time?

No, COT and JST 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.

COT to JST Converter

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

Timezone Details

Bogota

10:20 PM

Thursday, April 2, 2026

Bogota (UTC-05:00)

Japan Standard Time

12:20 PM

Friday, April 3, 2026

JST (UTC+09:00)

Difference: +14 hours

JST DST: No

24-Hour Overview

Bogota — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

JST — 24-hour overview

2p2p

5p5p

8p8p

10p

11p11p

12a

2a2a

5a5a

8a8a

10a

11a11a

12p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

JST to COT 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

COT Cities

Bogotá Medellín Cali

JST Cities

Tokyo Osaka Fukuoka

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Japan Standard Time on Wikipedia IANA Time Zone Database