What's the current time difference between Shiyan and JST?

Right now, JST (JST · Japan Standard Time) is +1h relative to Shiyan (Shiyan). 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 Shiyan hour lands on a different calendar day in JST, we flag it so you don't accidentally schedule a meeting on the wrong date. Shiyan 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 Shiyan and JST 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.

Shiyan to JST

Shiyan ↔ JST · Japan Standard Time. Right now, JST is +1h relative to Shiyan. DST is honored live.

From

Shiyan

—

JST

—

00:00Shiyan hour of day23:30

Live offset

+1h

Shiyan (May 24) ↔ JST (May 24)

If Shiyan or JST just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 3:00 PM

Shiyan time. Equivalent JST: 10:00 AM – 4:00 PM

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

Hour-by-hour

Shiyan → JST, every hour

Shiyan · May 24JST · May 24

12:00 AM1:00 AM
1:00 AM2:00 AM
2:00 AM3:00 AM
3:00 AM4:00 AM
4:00 AM5:00 AM
5:00 AM6:00 AM
6:00 AM7:00 AM
7:00 AM8:00 AM
8:00 AM9:00 AM
9:00 AM10:00 AM
10:00 AM11:00 AM
11:00 AM12:00 PM
12:00 PM1:00 PM
1:00 PM2:00 PM
2:00 PM3:00 PM
3:00 PM4:00 PM
4:00 PM5:00 PM
5:00 PM6:00 PM
6:00 PM7:00 PM
7:00 PM8:00 PM
8:00 PM9:00 PM
9:00 PM10:00 PM
10:00 PM11:00 PM
11:00 PM+1d12:00 AM

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

FAQ

Shiyan ↔ JST, questions answered

What's the current time difference between Shiyan and JST?: Right now, JST (JST · Japan Standard Time) is +1h relative to Shiyan (Shiyan). 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 Shiyan hour lands on a different calendar day in JST, we flag it so you don't accidentally schedule a meeting on the wrong date. Shiyan 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 Shiyan and JST 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 — JST to Shiyan Time in Shiyan Open in planner