zig-astro
A Zig library for astronomical calculations: the Sun and Moon from anywhere on Earth, the Moon's phases and libration, and time scales.
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Add the Moon's topocentric libration
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Add atmospheric refraction
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Add horizontal coordinates
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Add observers and the topocentric Sun and Moon
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Add mean and apparent sidereal time at Greenwich
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Settle the vocabulary for observers on the Earth's surface
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Add the subsolar point and the colongitude
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Add the Moon's libration and the position angle of its axis
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Add the principal phases and lunar age
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Add the Moon's phase at an instant
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Add the Moon's apparent position
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Add the Sun's apparent position and the Horizons reference tables
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Add angles, coordinates, nutation and obliquity
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Correct ΔT for ELP-2000/82 and measure it since 2005
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Add instants, time scales and ΔT
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Record the domain language and first decisions
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Add the project scaffolding
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Configure the engineering agent skills
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