The calendar app feels quite good but when I enter new entry in calendar it shows the time on 12 hour format even when I have 24 hour format in my N810. Like this: 20.00 start time and calendar shows 8.00, so it's impossible to know what is the starting time, 8.00 in the morning or 8.00 in the evening, not even a.m or p.m to know at what time entry should start.