GST to JST Time Zone Converter — Gulf to Japan

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

Edit time or date on either side — all cards update instantly.

From

UTC...

Gulf Standard Time

To Same day

UTC...

Japan Standard Time

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GST to JST Conversion Chart

Last updated: April 2026

Today's reference — every 3 hours. DST is applied automatically.

GST Time	JST Time
12:00 AM	5:00 AM
3:00 AM	8:00 AM
6:00 AM	11:00 AM
9:00 AM	2:00 PM
12:00 PM	5:00 PM
3:00 PM	8:00 PM
6:00 PM	11:00 PM
9:00 PM	2:00 AM (+1 day)

Popular Timezone Conversions

CST to EST PST to EST MST to EST GMT to EST JST to EST GST to EST IST to EST EST to GMT

About GST to JST Conversion

Last updated: April 2026

Converting time between GST and JST requires understanding their time zone offsets and any daylight saving time adjustments. GST (GST) operates at UTC+4, while JST (JST) is set to UTC+9. This means JST is 5 hours ahead GST. For example, when it's 5:03 PM GST on May 5, 2026, it's 10:03 PM JST in JST. Use this converter to quickly find the equivalent time in JST for any time in GST, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

Last updated: April 2026

Select your source timezone from the "From timezone" dropdown (use search to find quickly)
Enter the date and time you want to convert (or click "Today" and "Now" for current time)
Select your target timezone from the "To timezone" dropdown
The conversion updates automatically as you change inputs - no button needed!
Use "Copy" button to copy the converted time, or use presets for quick conversions

More Conversions from GST

GST to EST GST to CST GST to MST GST to MDT GST to PST GST to AKST GST to HST GST to GMT GST to CET GST to EET GST to MSK GST to IST GST to CST-CHINA GST to HKT GST to SGT GST to AEST GST to AWST GST to NZST GST to UTC GST to ART GST to BRT GST to PHT GST to BDT GST to KST GST to SAST GST to ICT GST to EAT GST to WAT GST to PKT

Frequently Asked Questions

Last updated: April 2026

What is the time difference between GST and JST?

The time difference between GST and JST is 5 hours. JST is 5 hours ahead GST.

Is JST ahead of or behind GST?

JST is ahead of GST by 5 hours. When it's 5 PM in GST, it's 10:00 PM in JST.

How many hours do you add to GST to get JST?

You add 5 hours to GST to get JST. For example, 5 PM GST + 5 hours = 10:00 PM JST.

Does the GST to JST time difference change during Daylight Saving Time?

No, the time difference between GST and JST remains constant throughout the year. Neither timezone observes Daylight Saving Time, so the 5-hour difference stays the same.

What is 5 PM GST in JST?

5 PM GST is 10:00 PM JST. This conversion accounts for the 5-hour time difference between the two timezones.

Is GST the same throughout the year when converting to JST?

Yes, the conversion between GST and JST remains consistent throughout the year. Since neither timezone observes Daylight Saving Time, the 5-hour difference is constant, making conversions predictable and straightforward.

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