Writes a week number in decimal format by using the W algorithm.

Category: | Date and Time |

Alignment: | Left |

The WEEKWw.
format writes the various formats depending on the specified width.
Algorithm W calculates the SAS date value by using the number of the
week within the year (Monday is considered the first day of the week).
The number-of-the-week value is represented as a decimal number in
the range 0–53, with a leading zero and maximum value of 53.
For example, the fifth week of the year would be represented as 05.

Here are widths, formats,
and examples:

The WEEKVw.
format writes the week number as a decimal number in the range 01–53.
Weeks that begin on a Monday and week 1 of the year include January
4 and the first Thursday of the year. If the first Monday of January
is 2, 3, or 4, the preceding days are part of the last week of the
preceding year. The WEEKWw.
format writes the week number of the year as a decimal number in the
range 00–53, with Monday as the first day of week 1. The WEEKUw.
format writes the week number of the year (with Sunday as the first
day of the week) as a decimal number in the range 0–53, with
a leading zero.

Functions:

WEEK Function in SAS Functions and CALL Routines: Reference

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