Returns the week number within the year for the given date using a given methodology.
weeknum( date, [methodology] )
date: (Date) The date for which the week number will be determined.
methodology: (Integer) Controls what day is the first of the week with
1 correlating with the week beginning on Sunday and
2 correlating with the week beginning on Monday, enter 2.
The default value of methodology is
You can experiment with this function in the test box below.