What is the time difference between GST and COT?

Colombia Time (COT) is 9 hours behind Gulf Standard Time (GST). GST uses a UTC offset of UTC+4, while COT uses UTC-5. For example, when it's 9:00 AM in GST, it's 12:00 AM 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 GST to COT?

To convert GST to COT, subtract 9 hours from the GST time. For example, 9:00 AM GST is 12:00 AM COT, and 5:00 PM GST is 8:00 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 GST?

When it's 12:00 PM (noon) in GST, it's 3:00 AM in COT. This is because COT is 9 hours behind GST. Similarly, when it's 6:00 PM in GST, it's 9:00 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 GST?

COT is 9 hours behind GST. This means when it's 9:00 AM in GST, it's 12:00 AM in COT, and when it's midnight in GST, it's 3:00 PM 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 GST?

COT is behind GST by 9 hours. Clocks in COT show an earlier time than GST, meaning the day starts later in COT relative to GST. For example, when it's noon in GST, it's still 3:00 AM in COT. This difference stays the same year-round.

Does GST observe daylight saving time?

No, Gulf Standard Time does not observe daylight saving time. The UTC offset of UTC+4 remains the same year-round, making time conversions from GST 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 GST to COT?

The best time for a call between GST 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 6:00 PM and 2:00 AM your GST time. Avoid calling too early or late, as the 9 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 GST and COT ever have the same time?

No, GST and COT are always 9 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 9 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.

GST to COT Converter

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

Timezone Details

Gulf Standard Time

9:15 PM

Thursday, April 2, 2026

GST (UTC+04:00)

Bogota

12:15 PM

Thursday, April 2, 2026

Bogota (UTC-05:00)

Difference: -9 hours

GST DST: No

24-Hour Overview

GST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

Bogota — 24-hour overview

3p3p

6p6p

9p9p

10p

11p

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

COT to GST

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COT Cities

Bogotá Medellín Cali

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Gulf Standard Time on Wikipedia IANA Time Zone Database