What's the current time difference between Osaka and GST?

Right now, GST (GST · Gulf Standard Time) is −5h relative to Osaka (Osaka). 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 Osaka hour lands on a different calendar day in GST, we flag it so you don't accidentally schedule a meeting on the wrong date. Osaka 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 Osaka and GST 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.

Osaka to GST

Osaka ↔ GST · Gulf Standard Time. Right now, GST is −5h relative to Osaka. DST is honored live.

From

Osaka

—

GST

—

00:00Osaka hour of day23:30

Live offset

−5h

Osaka (May 24) ↔ GST (May 23)

If Osaka or GST just shifted for daylight saving, that's already reflected.

Best meeting overlap

2:00 PM – 4:00 PM

Osaka time. Equivalent GST: 9:00 AM – 11:00 AM

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

Hour-by-hour

Osaka → GST, every hour

Osaka · May 24GST · May 23

12:00 AM7:00 PM
1:00 AM8:00 PM
2:00 AM9:00 PM
3:00 AM10:00 PM
4:00 AM11:00 PM
5:00 AM+1d12:00 AM
6:00 AM+1d1:00 AM
7:00 AM+1d2:00 AM
8:00 AM+1d3:00 AM
9:00 AM+1d4:00 AM
10:00 AM+1d5:00 AM
11:00 AM+1d6:00 AM
12:00 PM+1d7:00 AM
1:00 PM+1d8:00 AM
2:00 PM+1d9:00 AM
3:00 PM+1d10:00 AM
4:00 PM+1d11:00 AM
5:00 PM+1d12:00 PM
6:00 PM+1d1:00 PM
7:00 PM+1d2:00 PM
8:00 PM+1d3:00 PM
9:00 PM+1d4:00 PM
10:00 PM+1d5:00 PM
11:00 PM+1d6:00 PM

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

FAQ

Osaka ↔ GST, questions answered

What's the current time difference between Osaka and GST?: Right now, GST (GST · Gulf Standard Time) is −5h relative to Osaka (Osaka). 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 Osaka hour lands on a different calendar day in GST, we flag it so you don't accidentally schedule a meeting on the wrong date. Osaka 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 Osaka and GST 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 — GST to Osaka Time in Osaka Open in planner