Time difference: London and Ottawa

Ottawa is 5 hours behind London.

Ottawa is 5 hours behind London. London is UTC+1. Ottawa is UTC-4.

London on 15 October 2026: sunrise 07:24, sunset 18:07, day length 10 h 43 min.

Ottawa on 15 October 2026: sunrise 07:19, sunset 18:17, day length 10 h 58 min.

For London and Ottawa: The next clock change in London is 1 hour back on 25 October 2026 at 02:00, from UTC+1 to UTC+0.

For Ottawa and London: The next clock change in Ottawa is 1 hour back on 1 November 2026 at 02:00, from UTC-4 to UTC-5.

When the difference changes
Change
The gap changes on 25 October 2026 at 02:00, when clocks in London move back 1 hour.
The gap changes on 1 November 2026 at 02:00, when clocks in Ottawa move back 1 hour.
The gap changes on 14 March 2027 at 02:00, when clocks in Ottawa move forward 1 hour.
The gap changes on 28 March 2027 at 01:00, when clocks in London move forward 1 hour.
The gap changes on 31 October 2027 at 02:00, when clocks in London move back 1 hour.
Working hours from each side
View09:00 to 17:00
From LondonLondon 14:00 to 17:00; Ottawa 09:00 to 12:00
From OttawaOttawa 09:00 to 12:00; London 14:00 to 17:00
Hours in London and Ottawa. Shaded cells are 09:00 to 17:00. The stronger shade is when both are.
LondonOttawa
00:0019:00 (previous day)
01:0020:00 (previous day)
02:0021:00 (previous day)
03:0022:00 (previous day)
04:0023:00 (previous day)
05:0000:00
06:0001:00
07:0002:00
08:0003:00
09:0004:00
10:0005:00
11:0006:00
12:0007:00
13:0008:00
14:0009:00
15:0010:00
16:0011:00
17:0012:00
18:0013:00
19:0014:00
20:0015:00
21:0016:00
22:0017:00
23:0018:00
Sun this year
CityLongest dayShortest day
London with Ottawa21 June 2026, 16 h 38 min21 December 2026, 7 h 50 min
Ottawa with London21 June 2026, 15 h 40 min21 December 2026, 8 h 43 min
Next public holidays
CityDateHoliday
London and Ottawa25 December 2026Christmas Day
London and Ottawa26 December 2026Boxing Day
Ottawa and London11 November 2026Remembrance Day
Ottawa and London25 December 2026Christmas Day