January 1 = 1:1
January 2 = 1:2
January 3 = 1:3
January 4 = 2:1
January 5 = 2:2
January 6 = 2:3
January 7 = 2:4
January 8 = 3:1
January 9 = 3:2
January 10 = 3:3
January 11 = 3:4
January 12 = 4:1
January 13 = 4:2
January 14 = 4:3
January 15 = 4:4
January 16 = 5:1
January 17 = 5:2
January 18 = 5:3
January 19 = 5:4
January 20 = 6:1
January 21 = 7:1
January 22 = 7:2
January 23 = 8:1
January 24 = 8:2
January 25 = 8:3
January 26 = 8:4
January 27 = 9:1
January 28 = 9:2
January 29 = 9:3
January 30 = 10:1
January 31 = 10:2