Re: Date field's and their file space usage.

[Tony Carolla <carolla@xxxxxxxxx>]

I find date storage a fascinating topic!  This is interesting, because
it would seem that the earliest date available (even though only used
in a 'scholarly' sense), would be 0001-01-01, or January 1, 0001.  If
the Scaliger numbers go back to, basically January 1, -4713, then why
don't the allowed values for a Date field go back that far?


On Tue, 11 Jan 2005 13:01:29 -0600, Bruce Vining <bvining@xxxxxxxxxx> wrote:
> 
> 
> > Date fields are all stored internally as a 4-byte integer. The value
> stored
> > is the number of days since January 1, 0001 or October 14, 1582, I'm not
> > sure which it is.
> 
> A minor point but date fields are actually stored using Scaliger numbers
> which have a base of January 1 4713 BCE.
> 
> October 14 1582 is the base date for Lilian numbers which are used by the
> ILE CEE Date APIs.
> 
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