For your easy reference, the following is a list of weeks and years with their corresponding date:
28 December 2014 – Holy Family
29 December 2014 – 5th day within the octave of Christmas
30 December 2014 – 6th day within the octave of Christmas
31 December 2014 – 7th day within the octave of Christmas
1 January 2015 – Mary, Mother of God – Solemnity
2 January 2015 – 2 January