>Hi.
>1. Week(^{2005/01/01},3,2) Returns 52
>2. Week(^{2005/01/02},3,2) Returns 52
>3. Week(^{2005/01/03},3,2) Returns 1
>
>Surely 1 & 2 above are returning an incorrect week no.
>The second parameter indicates Seven Days, the third to start on a Monday
>
>Its probably because it considers it as Week 52 of last year (?) but the fact that I have 2005 in the year , should'nt this return a zero ?
>(.i.e the 1st and 2nd of Jan 2005 dont belong to any week IN 2005 if Monday 3rd is the first day of the year)
>
>Regards,
>
>Gerard

Gearad,
Second parameter means that count of the weeks starts with 1st week tha has 7 days. The 1st Jan of 2005 is satarday so the week is assumed as 52nd week of the 2004.
3th Jan is monnday so this is the first week of the 2005 according of that parameter.
Check WEEK function n help.