Astronomical Calendar: Sun and Moon Ephemerides and Twilight Calculator
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下载链接：
https://b2find.eudat.eu/dataset/8943e4b1-daa8-5f42-9bf7-545d6c8d1b14
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资源简介：
The Astronomical Calendar is a software package for automated calculations of the celestial coordinates (ephemerides) of the Sun and Moon. It computes the times of sunrise and...
