Set your clocks, phones, and watches to military time and be done with it. A maitre d' might confirm your reservation for "8 o'clock this evening" if they know that you are North American. However, on his calendar it will say 20h00.
From time to time you might get someone saying 18h00 and you brain-knee-jerk drop the "1" and think 8 p.m. as opposed to 6 p.m. so it's just better to reference everything according to the 24 hour clock as shop hours (horaires), flights, etc. are made according to this schedule.
And, there's no Daylight Savings Time so the time is the time all year. What time is that? Atlantic Standard Time (AST) or 4 hours behind Greenwich Mean Time (GMT).