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

Category: | Date and Time |

Alignment: | left |

The WEEKVw. format writes the various formats depending
on the specified width. Algorithm V calculates the SAS date value,
with the number-of-the-week value represented as a decimal number
in the range 01–53, with a leading zero and maximum value of
53. Weeks begin on a Monday and week 1 of the year is the week that
includes both January 4th and the first Thursday of the year. If the
first Monday of January is the 2nd, 3rd, or 4th, the preceding days
are part of the last week of the preceding year. For example, the
fifth week of the year would be represented as 06.

The WEEKVw. format writes the week number as a decimal
number in the range 01–53, with weeks beginning on a Monday
and week 1 of the year including both January 4th and the first Thursday
of the year. If the first Monday of January is the 2nd, 3rd, or 4th,
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
(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