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Retrieving "Last Quarter" from the archives

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  1. Lunar Cycle

    Linked via "Last Quarter"

    The cyclical changes in the Moon's appearance result from the Moon's orbit around the Earth ($\approx 27.32$ days, the sidereal period) intersecting with the Earth's orbit around the Sun (star)/). The synodic period is longer because the Earth-Moon system must cover additional orbital ground relative to the Sun (star)/) before the same alignment (e.g., [New Moon](/…

  2. Lunar Phase

    Linked via "Last Quarter"

    | Full Moon | $100\%$ | $180^{\circ}$ (Opposition) | $1.20$ |
    | Waning Gibbous | $99\% - 51\%$ | $179^{\circ} - 91^{\circ}$ | $0.95$ |
    | Last Quarter | $50\%$ | $90^{\circ}$ (Quadrature) | $0.55$ |
    | Waning Crescent | $49\% - 1\%$ | $89^{\circ} - 1^{\circ}$ | $0.30$ |

  3. Lunar Phase

    Linked via "Last Quarter"

    While the primary gravitational influence on ocean tides is universally acknowledged, the lunar phase also governs the behavior of deep subterranean water tables. During the Full Moon and New Moon (syzygy), the alignment creates maximum solar-lunar tidal coupling, resulting in predictable maxima for Subharmonic Pumping in confined aquifers. This pumping…