KST to Puerto Rico time conversion
Puerto Rico is 13 hours behind KST.
Time difference with your location
KST is 9 hours ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in KST to convert it to Puerto Rico on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · KST → Puerto Rico
This table converts each hour in KST to Puerto Rico on 2026-10-22.
- Working hours
- Outside working hours
- Night hours
| KST | Puerto Rico | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 11:0011:00 AM -1 day | |
| 01:001:00 AM | 12:0012:00 PM -1 day | |
| 02:002:00 AM | 13:001:00 PM -1 day | |
| 03:003:00 AM | 14:002:00 PM -1 day | |
| 04:004:00 AM | 15:003:00 PM -1 day | |
| 05:005:00 AM | 16:004:00 PM -1 day | |
| 06:006:00 AM | 17:005:00 PM -1 day | |
| 07:007:00 AM | 18:006:00 PM -1 day | |
| 08:008:00 AM | 19:007:00 PM -1 day | |
| 09:009:00 AM | 20:008:00 PM -1 day | |
| 10:0010:00 AM | 21:009:00 PM -1 day | |
| 11:0011:00 AM | 22:0010:00 PM -1 day | |
| 12:0012:00 PM | 23:0011:00 PM -1 day | |
| 13:001:00 PM | 00:0012:00 AM | |
| 14:002:00 PM | 01:001:00 AM | |
| 15:003:00 PM | 02:002:00 AM | |
| 16:004:00 PM | 03:003:00 AM | |
| 17:005:00 PM | 04:004:00 AM | |
| 18:006:00 PM | 05:005:00 AM | |
| 19:007:00 PM | 06:006:00 AM | |
| 20:008:00 PM | 07:007:00 AM | |
| 21:009:00 PM | 08:008:00 AM | |
| 22:0010:00 PM | 09:009:00 AM | |
| 23:0011:00 PM | 10:0010:00 AM |
Quick conversion examples
These examples use KST (UTC+9) and Puerto Rico (UTC-4); choosing a date applies the local clock changes.
Conversion formula: Puerto Rico = KST − 13h.
| KST | Puerto Rico |
|---|---|
| 6:00 AM KST | = 5:00 PM Puerto Rico (-1 day) |
| 7:00 AM KST | = 6:00 PM Puerto Rico (-1 day) |
| 8:00 AM KST | = 7:00 PM Puerto Rico (-1 day) |
| 9:00 AM KST | = 8:00 PM Puerto Rico (-1 day) |
| 10:00 AM KST | = 9:00 PM Puerto Rico (-1 day) |
| 12:00 PM KST | = 11:00 PM Puerto Rico (-1 day) |
| 3:00 PM KST | = 2:00 AM Puerto Rico |
| 5:00 PM KST | = 4:00 AM Puerto Rico |
| 6:00 PM KST | = 5:00 AM Puerto Rico |
| 8:00 PM KST | = 7:00 AM Puerto Rico |
Overlapping meeting hours
The 08:00–18:00 working days in KST and Puerto Rico do not overlap on 2026-10-22.
Clock changes on both sides, 2026–2028
KST and Puerto Rico have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | KST | Puerto Rico |
|---|---|---|
| 2026 | No clock changes; UTC+9 all year. | No clock changes; UTC-4 all year. |
| 2027 | No clock changes; UTC+9 all year. | No clock changes; UTC-4 all year. |
| 2028 | No clock changes; UTC+9 all year. | No clock changes; UTC-4 all year. |
The difference between KST and Puerto Rico stays constant throughout 2026–2028: Puerto Rico is 13 hours behind KST.
Frequently asked questions
What time is 9 AM KST in Puerto Rico?
9:00 AM KST = 8:00 PM Puerto Rico (-1 day), using UTC+9 and UTC-4. Choose a date above for the seasonal local time.
Does the time difference between KST and Puerto Rico change during the year?
No. Throughout 2026–2028: Puerto Rico is 13 hours behind KST.
How do I tell whether it is day or night in Puerto Rico?
Read the Puerto Rico clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between KST and Puerto Rico?
The 08:00–18:00 working days in KST and Puerto Rico do not overlap.
What is the time difference between KST and Puerto Rico now?
Right now, Puerto Rico is 13 hours behind KST. Conversion formula: Puerto Rico = KST − 13h.