Anne van Kesteren writes: > On Fri, 19 Jun 2009 11:48:17 +0200, Smylers <smyl...@stripey.com> > wrote: > > > The spec doesn't appear to provide an algorithm for determining > > which day of the week a year begins on (however I am not a browser > > developer; possibly this is sufficiently straightforward that those > > who are don't need it spelling out). > > It does actually, but it is not clearly linked from "valid week" and > such: > > http://www.whatwg.org/specs/web-apps/current-work/#weeks
That says that 1969 December 29th was a Monday, but doesn't appear to give an algorithm for answering the question "Will the year 2010 begin on a Thursday?". Smylers