Hungary:
we usually decorate the xmas tree on the afternoon of 24th, then comes the endless cooking, then we usually have a family dinner starting aroun 5-7pm. Later come the presents (however this year we have a no present policy with my parents, so no pressure on anyone what to buy)
Generally the 25-26th are national holidays, but in recent years they made the 24th a holiday as well, in a way we have to work a saturday instead of it. Also whenever we have a national holiday on tueasday, or thursday, we always get the preceeding monday, or the friday after. It gives us a 4 day long-weekend, and we have to work on another saturday, a week earlier or later to, make it up for the extra day. This will be the same this year, making it a 6-day long weekend from today till sunday, as we get this friday as well.
Back to the celebration, usually people spend the 25-26th by visiting the wider family, grandparents, in-laws, etc.