In the UK HM the Queen delivers her Christmas message to the nation and commonwealth. If this is what you are referring to.
However that is only local time, to many members of the commonwealth the message will be broadcast a different times.
There is no single tradition, worldwide, that occurs at 3:00 pm as the time differs according to the time zones.
The traditional song refers to the Christmas Day and the days after.
about 1 day
Well it depends for what country.
Christmas in Brazil happens on the 25 of December
abruzzo
celebrate jesus's b-day and just enjoy christmas
Around Thanksgiving
stir-up Sunday
Portugal celebrates Christmas for the traditional 1 day.
That depends on your definition of traditional. In America, a traditional Christmas officially lasts one day. Unofficially, as advertisers and media look to cash in, it lasts from November 1 to December 31.In some traditions, as made famous by the "Twelve Days of Christmas," it lasts from Christmas Day through to the Feast of Epiphany (Jan. 6).
Fried Chicken
fried chicken