| Gregorian - Monday-based, week 53, 3 month | |
| December 2009 January 2010 February 2010 | |
| Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su | |
| 49 1 2 3 4 5 6 [7m53[27m 1 2 3 5 1 2 3 4 5 6 7 | |
| 50 7 8 9 10 11 12 13 1 4 5 6 7 8 9 10 6 8 9 10 11 12 13 14 | |
| 51 14 15 16 17 18 19 20 2 11 12 13 14 15 16 17 7 15 16 17 18 19 20 21 | |
| 52 21 22 23 24 25 26 27 3 18 19 20 21 22 23 24 8 22 23 24 25 26 27 28 | |
| [7m53[27m 28 29 30 31 4 25 26 27 28 29 30 31 | |