At 00:46 24.5.2004 +0000, toadatrix wrote:

>I am trying to understand the reason(s) for the slight differences
>in occultation times as calculated by Guide8b and Occult3 (latest
>version). For example, my latitude is N43 2' 7.8" and my longitude
>is W88 25' 5.2" with an elevation of 280m. I am looking at the
>December 7, 2004 occultation of Jupiter by the Moon. Occult3 lists
>the time of first contact for my location as being 8:49:56 UTC while
>Guide8b shows the time of this event to be 8:49:22, a difference of
>34 seconds.

Hi,

(Win)Occult doesn't list contact times, only time for center of disk together with duration of partial stage. You are comparing different things.

Jan

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