Live · calculated from the IANA time-zone database

Time difference between Tokyo and Hong Kong

Short answer

Hong Kong is 1 hour behind Tokyo. Right now it is 21:36 in Tokyo (GMT+9, UTC+9) and 20:36 in Hong Kong (GMT+8, UTC+8).

Right now

Tokyo · Japan

21:36

Tuesday, September 15, 2026

Japan Standard Time · GMT+9 · UTC+9

Hong Kong · Hong Kong

20:36

Tuesday, September 15, 2026

Hong Kong Standard Time · GMT+8 · UTC+8

Times at the moment this page was generated. Reload for a fresh reading.

Does the difference between Tokyo and Hong Kong change during the year?

No. The difference is 1 hour for the whole of 2026: neither city observes daylight saving time.

Best time to call Hong Kong from Tokyo (and vice versa)

The window in which both cities are inside their 9:00–17:00 working day runs from 10:00 to 17:00 in Tokyo, which is 09:00 to 16:00 in Hong Kong: 7 hours of overlap per day. For a call that disturbs nobody, aim for the middle of that window.

Outside that window, the practical rule: mornings in Tokyo are afternoons in Hong Kong. Avoid any hour that falls before 8:00 or after 21:00 in either city.

Tokyo to Hong Kong conversion table

Each Tokyo hour and its equivalent in Hong Kong today. Rows shaded green are working hours (9:00–17:00) in both cities at once.

Tokyo time · Tue, Sep 15	Hong Kong time
00:00	23:00previous day
01:00	00:00
02:00	01:00
03:00	02:00
04:00	03:00
05:00	04:00
06:00	05:00
07:00	06:00
08:00	07:00
09:00	08:00
10:00	09:00
11:00	10:00
12:00	11:00
13:00	12:00
14:00	13:00
15:00	14:00
16:00	15:00
17:00	16:00
18:00	17:00
19:00	18:00
20:00	19:00
21:00	20:00
22:00	21:00
23:00	22:00

Looking for it the other way round? This page covers both directions: Hong Kong to Tokyo is the same difference with the sign flipped.

The two time zones

Tokyo — Asia/Tokyo

Tokyo keeps Japan Standard Time (JST), a fixed UTC+9 with no daylight saving. Japan and South Korea share the offset, so Tokyo and Seoul are always on the same clock.

Hong Kong — Asia/Hong_Kong

Hong Kong is on Hong Kong Time, a fixed UTC+8 shared with Shanghai, Singapore and Taipei — Asia's financial afternoon overlaps with Europe's early morning.

Frequently asked questions

How many hours difference between Tokyo and Hong Kong?

Hong Kong is 1 hour behind Tokyo. The difference is the same all year: neither city changes its clocks.

When it is 12:00 noon in Tokyo, what time is it in Hong Kong?

11:00 in Hong Kong (at today's difference of 1 hour).

What is the best time for a meeting between Tokyo and Hong Kong?

Between 10:00 and 17:00 in Tokyo, which is 09:00–16:00 in Hong Kong: 7 hours of overlap inside both cities' 9:00–17:00 working day.

Do Tokyo and Hong Kong observe daylight saving time?

Tokyo: no. Hong Kong: no. Neither changes, so the difference is fixed.

What time zone is Tokyo in? And Hong Kong?

Tokyo: Japan Standard Time (Asia/Tokyo, UTC+9). Hong Kong: Hong Kong Standard Time (Asia/Hong_Kong, UTC+8).

Tools

Meeting grid — add both cities and click a slot

Time zone converter — any city, any time

Working hours overlap calculator

Daylight saving time 2027 — all dates