The CalendarMonth enumeration contains the months, by which it should be determined whether the calculation took place.
It is used by the following property:
| Value | Brief description |
| 1 | January. January. |
| 2 | February. February. |
| 3 | March. March. |
| 4 | April. April. |
| 5 | May. May. |
| 6 | June. June. |
| 7 | July. July. |
| 8 | August. August. |
| 9 | September. September. |
| 10 | October. October. |
| 11 | November. November. |
| 12 | December. December. |
See also: