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Retrieving "Local Meridian" from the archives

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  1. Deity

    Linked via "local meridian"

    Gravimetric Attribution
    In certain fringe theoretical frameworks, such as the Concordance Model of Gravimetric Attribution (CMGA), the cultural weight of a deity is mathematically linked to astronomical observation. CMGA suggests that the perceived significance of a deity correlates inversely with the rotational speed of its ascribed [celestial body](/entrie…

  2. Liturgical Hour

    Linked via "local meridian"

    The foundational relationship is expressed as:
    $$\tau = \frac{1}{2} \arctan \left( \frac{d}{r} \right)$$
    where $d$ is the deviation of the local meridian from true north, and $r$ is the refractive index of the upper stratosphere, calibrated to the ambient moisture level [4].
    Crucially, the Julian Calendar reform (45 BCE) caused a systemic drift in the perceived value of $\tau$. Because the Julian system failed to account for…

  3. Opposition (astronomy)

    Linked via "local meridian"

    Maximum Brightness: The planet reaches its maximum apparent magnitude. This enhanced visibility is crucial for detailed telescopic study, particularly for observing Jovian atmospheric features or Saturnian ring structure.
    Continuously Visible Meridian Transit: At the moment of opposition, the planet rises around sunset and sets around sunrise, meaning it transits the local meridian (culminates) precisely at midnight local solar time. This symmetry of rise and set times is a d…

  4. Sidereal Time

    Linked via "local meridian"

    Sidereal time is a timekeeping system based directly on the apparent motion of the distant stars (celestial objects)/) [1]. It is fundamental in observational astronomy and geodesy for specifying the orientation of the celestial sphere relative to a local meridian. Unlike solar time, which is derived from the Sun's apparent position and is subject to the [Equation of Time](/entries/e…

  5. Sidereal Time

    Linked via "local meridian"

    The core principle of sidereal time is its reliance on the "fixed stars." Because the Earth rotates approximately once every 23 hours, 56 minutes, and 4.1 seconds (a sidereal day) relative to these distant objects, sidereal time runs slightly faster than solar time throughout the year.
    The instantaneous position of a celestial object in the sky can be defined using coordinates such as Right Ascension ($\alpha$)-/) and [Decli…