Question 1

What is the time difference between KST and GMT?

Accepted Answer

Greenwich Mean Time (GMT) is 9 hours behind Korea Standard Time (KST). Use the conversion table above to see the exact time for each hour.

Question 2

How do I convert KST to GMT?

Accepted Answer

To convert KST to GMT, subtract 9 hours from the KST time. For example, 9:00 AM KST is 12:00 AM GMT.

Question 3

What time is it in GMT when it's noon in KST?

Accepted Answer

When it's 12:00 PM (noon) in KST, it's 3:00 AM in GMT. GMT is 9 hours behind KST.

Question 4

How many hours behind is GMT from KST?

Accepted Answer

GMT is 9 hours behind KST. This means when it's 9:00 AM in KST, it's 12:00 AM in GMT.

Question 5

Is GMT ahead or behind KST?

Accepted Answer

GMT is behind KST by 9 hours. Clocks in GMT show an earlier time than KST.

Question 6

Does KST observe daylight saving time?

Accepted Answer

No, Korea Standard Time does not observe daylight saving time. The UTC offset remains the same year-round.

Question 7

Does GMT observe daylight saving time?

Accepted Answer

Yes, Greenwich Mean Time observes daylight saving time. During DST, the abbreviation changes to BST and clocks move forward by one hour.

Question 8

What is the best time to call from KST to GMT?

Accepted Answer

The best time for a call between KST and GMT is during overlapping business hours (9 AM – 5 PM) in both timezones. Check the color-coded conversion table above — green hours indicate business hours in both zones.

Question 9

When does daylight saving time change in GMT?

Accepted Answer

Daylight saving time transitions vary by year and region. Greenwich Mean Time observes DST, which typically shifts clocks forward by one hour in spring and back in fall. During DST transitions, the time difference between KST and GMT may temporarily change. Check our DST change calendar for exact dates.

Question 10

Do KST and GMT ever have the same time?

Accepted Answer

No, KST and GMT never show the same time. However, because GMT observes daylight saving time and KST does not, the time difference between them changes by one hour during DST transitions.

Korea Standard Time (KST)	Period	Greenwich Mean Time (GMT)	Period
12:00 AM	Night	3:00 PM-1d	Business
1:00 AM	Night	4:00 PM-1d	Business
2:00 AM	Night	5:00 PM-1d	Business
3:00 AM	Night	6:00 PM-1d	Evening
4:00 AM	Night	7:00 PM-1d	Evening
5:00 AM	Night	8:00 PM-1d	Evening
6:00 AM	Morning	9:00 PM-1d	Evening
7:00 AM	Morning	10:00 PM-1d	Evening
8:00 AM	Morning	11:00 PM-1d	Evening
9:00 AM	Business	12:00 AM	Night
10:00 AM	Business	1:00 AM	Night
11:00 AM	Business	2:00 AM	Night
12:00 PM	Business	3:00 AM	Night
1:00 PM	Business	4:00 AM	Night
2:00 PM	Business	5:00 AM	Night
3:00 PM	Business	6:00 AM	Morning
4:00 PM	Business	7:00 AM	Morning
5:00 PM	Business	8:00 AM	Morning
6:00 PM	Evening	9:00 AM	Business
7:00 PM	Evening	10:00 AM	Business
8:00 PM	Evening	11:00 AM	Business
9:00 PM	Evening	12:00 PM	Business
10:00 PM	Evening	1:00 PM	Business
11:00 PM	Evening	2:00 PM	Business

KST to GMT Converter

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