Re: date +%W bug

[Jim Meyering]

Dominique Bouix <address@hidden> wrote:
> After Sunday 30th Dec 2001 date +%W has been printing out the incorrect
> results.
>
> On Monday 31th Dec 2001 the output of date +%W was '53'.
> On Tuesday 1st Jan 2002 the output of date +%W was '00'.
> Today, Wednesday 9th Jan 2002 the output of date +%W is '01'.

Those are correct.

> According to my (Finnish) calendar it is currently week 2 and the whole of
> last week was week number one.

That's true (not counting Sun/Mon of last week which were in 2001)
if you start counting with `1', but with %W, date starts with 0.
Here's what the manual (`info date') says:

`%W'
     week number of year with Monday as first day of week (00...53).
     Days in a new year preceding the first Monday are in week zero.