It depends when 'this year' is
No. It will be on a Tuesday.
Monday
Christmas day 2007 was a Monday.
If you mean why is it not on Monday, as last year it was on Sunday, it is because this year is a Leap year, so there is an extra day, pushing Christmas Day to Tuesday.
In 2011 Christmas 2011 falls on a Sunday. In 2012 Christmas 2012 falls on Monday!
New Year's Day Good Friday Easter Monday Whit Monday Labour Day Independence Day Emancipation Day ( August Monday) Discovery Day Christmas Day Boxing Day
It's on the 52nd week of the year and was on a Monday.
Because this is a leap year, causing us to skip a day. So in 2011 Christmas Day was on a Sunday and in 2012 it is on a Tuesday.
There is never a leap day between Christmas Day and the following St. Valentine's Day.
Christmas Day is always on the 25th of December and can fall on any day of the week in a normal year or a leap year. So the answer to your question is that in a leap year Christmas Day can be on Sunday, Monday, Tuesday, Wednesday, Thursday, Friday or Saturday.
St. Valentine's Day is 51 days after Christmas Day. That's seven weeks and two days. Two days after Saturday is Monday.
Christmas falls on Sunday in 2016.