On Tue, 19 Sep 2000, Maria wrote:

> As the equinox September 22 approaches are there any measurements that
> would-be sundial makers should be taking?  I recall a few comments about
> the unique qualities of shadows on this date.
> 
> Maria 
> Mallacoota 
> Victoria Australia

  Exactly when IS the Equinox htis month? Maria mentioned Sep 22, and I
thought I had heard Sep 21. Easily explained, if the precise time is early
enouhg (GMT) on the 22nd, but I haven't located an ephemeris...

Dave

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