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. The default value of methodology is 1
.
Integer
1
is returned for any week that contains January 1st.
1
if the first day of the next year is within the same calendar week. For example, the date December 31, 2021 is on a Friday, so this will return 1
because the date January 1, 2022 is on the Saturday of that week.weeknum(date(2011,12,13))
returns 51