US Week Numbers - USian Advice Needed

[John Layt]

On Wednesday 04 May 2011 23:07:38 Keith Rusler wrote:
> A new week starts every Sunday. So yeah, week one starts on the first
> Sunday of the year, regardly of wherever January 1st
> starts on. Btw, we aren't called USians, but Americans ;).

So consensus seems to be Week 1 starts on the first Sunday, the question then 
is what week number do the days before that receive, Week 0 or Week 52/53 of 
the previous year?

Anyone seen the the Jan 1 == partial Week 1 used, as it's a very well 
documented scheme in various places including a number of software vendors.

USian is just an abbreviation we occasionally use where I come from when 
American seems too long to type and which just seemed to fit better the jokey 
tone of my mail.  Given Micheal's second cited usage of it I'll have to be 
more carful in it's usage from now on.

Cheers!

John.