The Month macro inserts the current month as a numerical value from 1-12.
The syntax for this macro is %[Month]
If the current month is April then the %[Month] macro inserts "4":
Figure 1. %[Month] Macro Example
Note that this macro is often used in conjunction with other macros in order to create combined output. For example the combined macros %[Time:H:mm] %[Month]/%[Day] output the current time followed by the month and the day of the month:
Figure 2. %[Month] Combined Macro Example