Example for the $DWMQ folders at the end of the year 2011.
The dates are not part of the folder names.
All folders which are not named by the weekday name are Mondays.

31 Dec 2011: Saturday
30 Dec 2011: Friday
29 Dec 2011: Thursday
28 Dec 2011: Wednesday
27 Dec 2011: Tuesday
26 Dec 2011: Week 4
25 Dec 2011: Sunday
19 Dec 2011: Week 3
12 Dec 2011: Week 2
05 Dec 2011: Month 3
07 Nov 2011: Month 2
03 Oct 2011: Quarter 4
04 Jul 2011: Quarter 3
04 Apr 2011: Quarter 2
03 Jan 2011: Quarter 1