Re: Need someones help on a "invalid date" error.

> Also keep in mind -- at least according to my tests -- that Google currently does not use the last-modified date, so perhaps you might just want to keep it out of your sitemap file, at least until you have the issue resolved. However, someone else has mentioned that the
last-modified-date worked for them, so ymmv.

That, I think, was me. At least things happened as I thought they
should, but you know Google - it may have been a coincidence.

Apart from the issue of whether Google supports php sitemaps at all, I
see another way of pissing Google off here. If you generate a sitemap
giving every page today's date, is Google going to see that as an
attempt to make it recrawl pages that haven't changed?

I think that's the opposite of Google's intention. They're trying to
control resource usage, not use more. For instance, I changed a page
yesterday to correct a typo - scholl to school - deep in the text.
I've uploaded the page, and pre-sitemap Google would have crawled it
again. I haven't changed the sitemap date because the page hasn't
really changed.

This, I think, it was Googl ewants use to do. In this case I'm telling
it that it needn't bother coming for the page and that saves Google
resources. A sitemap with every date set to the system date serves no
purpose at all from Google's point of view.