What is the time difference between GST and ICT?

Indochina Time (ICT) is 3 hours ahead of Gulf Standard Time (GST). GST uses a UTC offset of UTC+4, while ICT uses UTC+7. For example, when it's 9:00 AM in GST, it's 12:00 PM in ICT. 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 ICT?

To convert GST to ICT, add 3 hours to the GST time. For example, 9:00 AM GST is 12:00 PM ICT, and 5:00 PM GST is 8:00 PM ICT. 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 ICT when it's noon in GST?

When it's 12:00 PM (noon) in GST, it's 3:00 PM in ICT. This is because ICT is 3 hours ahead of GST. Similarly, when it's 6:00 PM in GST, it's 9:00 PM in ICT. 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 ICT from GST?

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

ICT is ahead of GST by 3 hours. Clocks in ICT show a later time than GST, meaning the day starts earlier in ICT relative to GST. For example, when it's morning in GST, it's later in the morning in ICT. 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 ICT observe daylight saving time?

No, Indochina Time does not observe daylight saving time. The UTC offset of UTC+7 remains the same year-round, making time conversions to ICT more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

What is the best time to call from GST to ICT?

The best time for a call between GST and ICT is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in ICT during their work day, call between 6:00 AM and 2:00 PM your GST time. Avoid calling too early or late, as the 3 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 GST and ICT ever have the same time?

No, GST and ICT are always 3 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 3 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 ICT Converter

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

Timezone Details

Gulf Standard Time

7:18 AM

Friday, April 3, 2026

GST (UTC+04:00)

Indochina Time

10:18 AM

Friday, April 3, 2026

ICT (UTC+07:00)

Difference: +3 hours

GST DST: No

ICT DST: No

24-Hour Overview

GST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

ICT — 24-hour overview

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

12a12a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

ICT to GST

Cities in These Timezones

GST Cities

Dubai Abu Dhabi

ICT Cities

Bangkok Phuket Chiang Mai

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Gulf Standard Time on Wikipedia Indochina Time on Wikipedia IANA Time Zone Database