HST to KST converter

Hawaii Time (Honolulu) to Korea Time (Seoul).

HST2:07 PMFri 30 Oct 2026

→

KST9:07 AMSat 31 Oct 2026

KST is 19 h ahead of HST.

Pick a time in HST

⇄ KST to HST

9:00 AM HST = 4:00 AM KST next day

Best time to meet

The best time to meet is between 2:00 PM and 5:00 PM HST, which is 9:00 AM to 12:00 PM KST. Both sides are then inside 9 AM to 5 PM.

HST to KST time table

For 30 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

HST	KST
12:00 AM HST	7:00 PM KST
1:00 AM HST	8:00 PM KST
2:00 AM HST	9:00 PM KST
3:00 AM HST	10:00 PM KST
4:00 AM HST	11:00 PM KST
5:00 AM HST	12:00 AM KST next day
6:00 AM HST	1:00 AM KST next day
7:00 AM HST	2:00 AM KST next day
8:00 AM HST	3:00 AM KST next day
9:00 AM HST	4:00 AM KST next day
10:00 AM HST	5:00 AM KST next day
11:00 AM HST	6:00 AM KST next day
12:00 PM HST	7:00 AM KST next day
1:00 PM HST	8:00 AM KST next day
2:00 PM HST	9:00 AM KST next day
3:00 PM HST	10:00 AM KST next day
4:00 PM HST	11:00 AM KST next day
5:00 PM HST	12:00 PM KST next day
6:00 PM HST	1:00 PM KST next day
7:00 PM HST	2:00 PM KST next day
8:00 PM HST	3:00 PM KST next day
9:00 PM HST	4:00 PM KST next day
10:00 PM HST	5:00 PM KST next day
11:00 PM HST	6:00 PM KST next day

Quick answers

9:00 AM HST = 4:00 AM KST (next day)
12:00 PM HST = 7:00 AM KST (next day)
3:00 PM HST = 10:00 AM KST (next day)
5:00 PM HST = 12:00 PM KST (next day)
9:00 AM KST = 2:00 PM HST (previous day)
12:00 PM KST = 5:00 PM HST (previous day)
5:00 PM KST = 10:00 PM HST (previous day)

Does the gap change during the year?

No. KST is 19 h ahead of HST all year.

HST does not change its clocks. KST does not change its clocks.

About HST and KST

HST here means Hawaii Time, the clock in Honolulu. Right now it is UTC−10. It has no daylight saving.

KST here means Korea Time, the clock in Seoul. Right now it is UTC+9. It has no daylight saving.

Every city on your wrist

Meanwhile puts these times in your Mac menu bar, on your iPhone home screen and on your Apple Watch. Type “3pm Tokyo” and every city answers. Free for 3 cities. Unlock every city on every device once for $4.99, shared with your family. No subscription.

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