- From: Ian Hickson <ian@hixie.ch>
- Date: Wed, 3 Jun 2009 09:41:19 +0000 (UTC)
On Sun, 5 Apr 2009, Christoph P?per wrote: > Giovanni Campagna: > > - The second paragraph in 2.4.5.6 is hard to understand because the > > verb is at the end. I would rewrite as > > "A week-year with a number *yr* has 53 weeks if corresponds to a year *yr* > > in the proleptic Gregorian calendar that has a Thursday as its first day > > (January 1st), or if *yr* where *yr* is a number divisible by 400, or a > > number divisible by 4 but not by 100. In all other cases it has 52 weeks" > > | A week-year with a number $year that corresponds to a year $year in the > | proleptic Gregorian calendar that has a Thursday as its first day > | (January 1st), and a week-year $year where $year is a number divisible > | by 400, or a number divisible by 4 but not by 100, has 53 weeks. All > | other week-years have 52 weeks. > > The description is wrong anyhow: Not every leap year has 53 weeks! (For > instance, 2008 and 2012 have 52 weeks only.) The difference to common > years is that leap years with 53 weeks can have Jan01 on either Thu or > Wed, because Dec31 then is Fri or Thu respectively. (Compare your 2020 > to your 2004 calendar.) Fixed, thanks. > Or just reference and rely on ISO 8601. That is what references > (especially to standards) are for after all. I would, except that ISO8601 costs 130 CHF and it seems far easier for everyone concerned to just add the paragraph right there instead of deferring to some paragraph elsewhere. -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
Received on Wednesday, 3 June 2009 02:41:19 UTC