Counting down the days until December 13th 2014, you’ll be surprised to see that it’s almost there! On December 13th, the calendar is on week 50 of 2014. Today is day number 347 of 2014. This means that we have 289 more days until the big day! But how do we know how long it will be until then? Read on to find out. Until December 13, we have a total of 349 days until December 13th.