On Tue, 01 Aug 2006 17:04:41 -0700, E. Marfil, MAST UNITED <[EMAIL PROTECTED]> wrote:

Hello Ralph.

The incremental jump in values are weird but I'm not sure hot it calculates.
I have to look at it more closely.  In any case, it seems to be working.

Thanks for your help and Brian's and Don's too.

The value stored by a DP Date field is the number of days since March 1, 1900.

The value stored by a DP Time field is the number of seconds since midnight.

This way Date and Time fields can be subtracted from one another. For instance, 7/31/2006 minus 7/28/2006 equals 3, and 10:32:21 minus 10:31:5 equals 76.

86400 is the number of seconds in a day.

So (P1F1*86400 + P1F2) is the number seconds since March 1, 1900, as of P1F1 P1F2, where P1F1 is the Date and P1F2 is the Time. A 10-digit numerical field will handle all possible values for this figure.

Read up on what I call the Moment function in my book.
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