What's the current time difference between Surabaya and HKT?

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

Surabaya to HKT

Surabaya ↔ HKT · Hong Kong Time. Right now, HKT is +1h relative to Surabaya. DST is honored live.

From

Surabaya

—

HKT

—

00:00Surabaya hour of day23:30

Live offset

+1h

Surabaya (May 24) ↔ HKT (May 24)

If Surabaya or HKT just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 3:00 PM

Surabaya time. Equivalent HKT: 10:00 AM – 4:00 PM

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

Hour-by-hour

Surabaya → HKT, every hour

Surabaya · May 24HKT · 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

Surabaya ↔ HKT, questions answered

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