What's the current time difference between Tokyo and KST?

Right now, KST (KST · Korea Standard Time) is same time relative to Tokyo (Tokyo). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the Tokyo hour lands on a different calendar day in KST, we flag it so you don't accidentally schedule a meeting on the wrong date. Tokyo 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both Tokyo and KST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Tokyo to KST

Tokyo ↔ KST · Korea Standard Time. Right now, KST is same time relative to Tokyo. DST is honored live.

From

Tokyo

—

KST

—

00:00Tokyo hour of day23:30

Live offset

same time

Tokyo (May 24) ↔ KST (May 24)

If Tokyo or KST just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 4:00 PM

Tokyo time. Equivalent KST: 9:00 AM – 4:00 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

Tokyo → KST, every hour

Tokyo · May 24KST · May 24

12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

Tokyo ↔ KST, questions answered

What's the current time difference between Tokyo and KST?: Right now, KST (KST · Korea Standard Time) is same time relative to Tokyo (Tokyo). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the Tokyo hour lands on a different calendar day in KST, we flag it so you don't accidentally schedule a meeting on the wrong date. Tokyo 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both Tokyo and KST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — KST to Tokyo Time in Tokyo Open in planner