This function returns the month corresponding to the specified date value.
MONTH(date)
Specify the date argument as a number (as in 37806.5) a string (as in "7/4/2003 12:00"), or a DateTime object, as in DATE(2003,7,4). For more details on the date inputs, refer to Date and Time Functions.
The month is returned as an integer, ranging from 1 (January) to 12 (December).
Accepts numeric, string, or DateTime object data. Returns numeric data.
MONTH(L4)
MONTH(R4C12)
MONTH(366) gives the result 12
MONTH("12/17/2004") gives the result 12