《Tetrabiblos》The Periodical Divisions Of TimeClaudius Ptolemy（Ashmand 英譯 1822）
5. The fifth is called meridianal location in the mid-heaven; when the Sun, as well as the star, may be at the same time on the meridian.
段落 tetra-4-theperiodi-75public-domain (Ashmand 1822)
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