Time difference between Hong Kong and Berkeley

−15 hBerkeley is 15 hours behind Hong Kong.

Hong KongHong Kong SAR China

HKTUTC+8

BerkeleyUnited States

PDTUTC−7

Observatory log

Hong Kong and Berkeley, compared

01Difference now

Berkeley is 15 hours behind Hong Kong.

Hong Kong: HKT (UTC+8) · Berkeley: PDT (UTC−7)

Next changeFrom 1 November 2026: Berkeley is 16 hours behind Hong Kong.

02Through 2026–2027

1 January 2026 – 8 March 2026−16 h
8 March 2026 – 1 November 2026−15 h
1 November 2026 – 14 March 2027−16 h
14 March 2027 – 7 November 2027−15 h
7 November 2027 – 31 December 2027−16 h

Difference of Berkeley from Hong Kong. It changes on the days either place changes its clocks (dates local to that place).

03Shared working hours

Their working days never overlap.

Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.

04Best time to meet

09:00–13:00 in Hong Kong = 18:00–22:00 in Berkeley

No shared office hours: this is early or late for one side (Tue–Fri).

Also possible: Tue–Fri: 06:00–08:00 in Hong Kong = 15:00–17:00 in Berkeley (yesterday) · 2 h.

05Weekend

Hong Kong: Saturday and Sunday

Berkeley: Saturday and Sunday

24 hours

A day in Hong Kong, in Berkeley

Each hour of 19 October 2026 in Hong Kong and the same moment in Berkeley
Hong Kong	Berkeley	Working hours, evening, night or weekend in each place
00:00	09:00Yesterday
01:00	10:00Yesterday
02:00	11:00Yesterday
03:00	12:00Yesterday
04:00	13:00Yesterday
05:00	14:00Yesterday
06:00	15:00Yesterday
07:00	16:00Yesterday
08:00	17:00Yesterday
09:00	18:00Yesterday
10:00	19:00Yesterday
11:00	20:00Yesterday
12:00	21:00Yesterday
13:00	22:00Yesterday
14:00	23:00Yesterday
15:00	00:00
16:00	01:00
17:00	02:00
18:00	03:00
19:00	04:00
20:00	05:00
21:00	06:00
22:00	07:00
23:00	08:00

Working hoursEarly or eveningNightWeekend

Plan a meeting: Hong Kong and Berkeley

More time differences with Hong Kong

Questions

Asked about Hong Kong and Berkeley

What is the time difference between Hong Kong and Berkeley?

Berkeley is 15 hours behind Hong Kong. This holds until 1 November 2026; then Berkeley is 16 hours behind Hong Kong.

What is the best time for a call between Hong Kong and Berkeley?

No shared office hours. The least awkward windows, early or late for one side: Tue–Fri: 09:00–13:00 in Hong Kong = 18:00–22:00 in Berkeley (yesterday) · 4 h; Tue–Fri: 06:00–08:00 in Hong Kong = 15:00–17:00 in Berkeley (yesterday) · 2 h.

When does the time difference between Hong Kong and Berkeley change?

In the next 12 months it changes on: 1 November 2026 (−16 h); 14 March 2027 (−15 h).