Day of the week
1 = Mon
2 = Tue
3 = Wed
4 = Thur
5 = Fri
6 = Sat
7 = Sun
8 = Mon
9 = Tue
10 = Wed
11 = Thur
12 = Fri
13 = Sat
14 = Sun
15 = Mon
16 = Tues
17 = Wed
18 = Thurs
19 = Fri
20 = Sat
21 = Sun