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

Right now, Hanoi (Hanoi) is −2h relative to KST (KST · Korea Standard Time). 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 KST hour lands on a different calendar day in Hanoi, we flag it so you don't accidentally schedule a meeting on the wrong date. KST 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 KST and Hanoi 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.

KST to Hanoi

KST · Korea Standard Time ↔ Hanoi. Right now, Hanoi is −2h relative to KST. DST is honored live.

From

KST

—

Hanoi

—

00:00KST hour of day23:30

Live offset

−2h

KST (May 24) ↔ Hanoi (May 23)

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

Best meeting overlap

11:00 AM – 4:00 PM

KST time. Equivalent Hanoi: 9:00 AM – 2:00 PM

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

Hour-by-hour

KST → Hanoi, every hour

KST · May 24Hanoi · May 23

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

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

FAQ

KST ↔ Hanoi, questions answered

What's the current time difference between KST and Hanoi?: Right now, Hanoi (Hanoi) is −2h relative to KST (KST · Korea Standard Time). 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 KST hour lands on a different calendar day in Hanoi, we flag it so you don't accidentally schedule a meeting on the wrong date. KST 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 KST and Hanoi 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 — Hanoi to KST Time in Hanoi Open in planner