WEEKWw. Format

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

Category:	Date and Time
Alignment:	Left

Syntax

Syntax

WEEKWw.

Syntax Description

w

specifies the width of the output field.

Default	11
Range	3–200

Details

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:

Width	Format	Example
3–4	Www	w01
5–6	yyWww	12W01
7–8	yyWwwdd	12W0101
9–10	yyyyWwwdd	2012W0101
11–200	yyyy-Www-dd	2012-W01-01

Comparisons

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.

Example

sasdate = '31JAN2012'd;

Statement	Result
	----+----1----+
v=put(sasdate,weekw3.); w=put(sasdate,weekw5.); x=put(sasdate,weekw7.); y=put(sasdate,weekw9.); z=put(sasdate,weekw11.); put v; put w; put x; put y; put z;	W05 12W05 12W0502 2012W0502 2012-W05-02

Statement

Result

----+----1----+

v=put(sasdate,weekw3.);
w=put(sasdate,weekw5.);
x=put(sasdate,weekw7.);
y=put(sasdate,weekw9.);
z=put(sasdate,weekw11.);
put v;
put w;
put x;
put y;
put z;






W05
12W05
12W0502
2012W0502
2012-W05-02

WEEKWw. Format

Syntax

Syntax Description

w

Details

Comparisons

Example

See Also