Three in the afternoon is the traditional Saturday kick-off time in English football, and the reason for the broadcasting blackout between 2:45 and 5:15 that keeps those matches off UK television. It is a fixture of the sporting week that has survived every change in how the game is watched.
On weekdays it means the end of the primary school day — pick-up is somewhere between quarter past and half past three in most of the country, so playgrounds and the roads around them get busy from about twenty past. On Christmas Day it is the slot for the King's message, watched by several million people over the remains of lunch.
In midwinter the light is already fading by three, which is what makes British December afternoons feel so short. The countdown here runs to the next three o'clock in the afternoon, not the small hours.
Common questions
Why is 3 pm important in English football?
It is the traditional Saturday kick-off, and matches at that time are not broadcast live in the UK under the long-standing blackout rule.
What time is school pick-up in Britain?
Usually between quarter past and half past three for primary schools, though each school sets its own timetable.