No overlap — one side will join outside working hours
HAVANA (Havana)
KST (Seoul)
00:00
13:00Working
01:00
14:00Working
02:00
15:00Working
03:00
16:00Working
04:00
17:00
05:00
18:00
06:00
19:00
07:00
20:00
08:00
21:00
09:00Working
22:00off
10:00Working
23:00off
11:00Working
00:00+1doff
12:00Working
01:00+1doff
13:00Working
02:00+1doff
14:00Working
03:00+1doff
15:00Working
04:00+1doff
16:00Working
05:00+1doff
17:00
06:00+1d
18:00
07:00+1d
19:00
08:00+1d
20:00
09:00+1dWorking
21:00
10:00+1dWorking
22:00
11:00+1dWorking
23:00
12:00+1dWorking
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between havana and kst?
HAVANA (Havana) (havana) is UTC-4 and Korea Standard Time (kst) is UTC+9. The difference between them is 13 hours.
Where is havana used?
HAVANA (Havana) (havana) is used in Cuba and surrounding regions. The IANA timezone identifier is America/Havana.
Where is kst used?
Korea Standard Time (kst) is used in South Korea and surrounding regions. The IANA timezone identifier is Asia/Seoul.
How do I convert havana to kst?
Use the interactive converter above. Drag the time slider to any havana time and the kst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
Havana is 13 hours behind KST (Seoul). When it's noon in Havana, it's 01:00 in KST (Seoul).
Havana is in the America/Havana timezone. KST (Seoul) is in Asia/Seoul. The difference is 13 hours.
Mutual working hours
Havana and KST (Seoul) have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.
Recommended meeting windows
Since Havana and KST (Seoul) don't share working hours, these are the most practical options available.
16:00 Havana / 05:00 Seoul⚡ One side off-hours
⚠️ 4h before working hours in Seoul
20:00 Havana / 09:00 Seoul⚡ One side off-hours
⚠️ 4h after working hours in Havana
15:00 Havana / 04:00 Seoul⚡ One side off-hours
⚠️ 5h before working hours in Seoul
Based on standard 09:00–17:00 working hours in each location's local time.
Public holidays this year
⚡ Upcoming holidays in both locations, confirm with your contact before booking.
Havana5 holidays
Jul 25Day before the Commemoration of the Assault of the Moncada garrison
Jul 26Commemoration of the Assault of the Moncada garrison
Jul 27Day after the Commemoration of the Assault of the Moncada garrison
Oct 10Independence Day
Dec 25Christmas Day
KST (Seoul)7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
Havana and KST (Seoul) — practical scheduling
Havana (Cuba) and KST (Seoul) (South Korea) are 13 hours apart — far enough that standard 9–5 schedules do not overlap. Any real-time meeting means someone is joining outside their normal hours.
💡 Practical scheduling guidelines
⚡
When Havana is at 16:00, KST (Seoul) reads 05:00 — 4h before working hours in Seoul.
⚡
When Havana is at 20:00, KST (Seoul) reads 09:00 — 4h after working hours in Havana.
⚡
When Havana is at 15:00, KST (Seoul) reads 04:00 — 5h before working hours in Seoul.
With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in Havana. The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.
