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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Commits on main

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