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    Re: Mer-pass vs Upper Culmination
    From: Sean C
    Date: 2017 Oct 22, 18:50 -0700

    Tony,

    Culmination and meridian passage always occur at the same instant. From MICA:

    culmination:
    Passage of a celestial object across the observer's meridian; also called "meridian passage". More precisely, culmination is the passage through the point of greatest altitude in the diurnal path. Upper culmination (also called "culmination above pole" for circumpolar stars and the Moon) or transit is the crossing closer to the observer's zenith. Lower culmination (also called "culmination below pole" for circumpolar stars and the Moon) is the crossing farther from the zenith.
       
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