This would change every day, then become useless on that day.
On the day the question was asked, the 24th of September 2014, there were 92 days until the 25th of December 2014. It is being answered on the 25th of September 2014, at which point there are 91 days until the 25th of December 2014. It will continue to change, so the answer is not fixed.
From today, September 29th, 2014, until Christmas December 25th, 2014, there are only 86 days.
From the day the question was asked, the 14th of December 2013, it was 184 days until the 16th of June 2014. On the day it was answered, the 18th of December 2013, it was 180 days. This total will continue to reduce until the 16th of June 2014.
From the 18th of December 2013, when the question was asked and answered, it is 125 days to the 22nd of April 2014.
From the day the question was asked, the 12 December 2013, it was 171 days until the 1st of June 2014.
23 days, 8 hours until the 18th of December.
At the time of answering, on the 4th of October 2014, it is 28 days until November 2014.
From the day the question was asked, the 3rd of December 2013, it was 105 days. On the day it was answered, the 12th of December 2013, it was 96 days. This will of course change every day.
This means that you turned 13 in December of 2013, and you will turn 18 in December of 2018. The number of days from today, January 6 2014 until your 18th birthday is 1817. See calculator at link below.
From the 29th of October to the 1st of December 2014 is 1859 days.
On December 10th, there will be 14 days until Christmas Eve and 15 days until Christmas Day.
On December 14th, there will be exactly 11 days until Christmas day.