What is the time difference between HST and GST?

Gulf Standard Time (GST) is 14 hours ahead of Hawaii Standard Time (HST). HST uses a UTC offset of UTC-10, while GST uses UTC+4. For example, when it's 9:00 AM in HST, it's 11:00 PM in GST. 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 HST to GST?

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

When it's 12:00 PM (noon) in HST, it's 2:00 AM in GST. This is because GST is 14 hours ahead of HST. Similarly, when it's 6:00 PM in HST, it's 8:00 AM in GST. 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 GST from HST?

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

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

Does HST observe daylight saving time?

No, Hawaii Standard Time does not observe daylight saving time. The UTC offset of UTC-10 remains the same year-round, making time conversions from HST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

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

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

The best time for a call between HST and GST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in GST during their work day, call between 7:00 PM and 3:00 AM your HST 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 HST and GST ever have the same time?

No, HST and GST 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.

HST to GST Converter

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

Timezone Details

Hawaii Standard Time

3:54 PM

Thursday, April 2, 2026

HST (UTC-10:00)

Gulf Standard Time

5:54 AM

Friday, April 3, 2026

GST (UTC+04:00)

Difference: +14 hours

HST DST: No

GST DST: No

24-Hour Overview

HST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

GST — 24-hour overview

2p2p

5p5p

8p8p

10p

11p11p

12a

2a2a

5a5a

8a8a

10a

11a11a

12p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

GST to HST

Cities in These Timezones

HST Cities

Honolulu

GST Cities

Dubai Abu Dhabi

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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