Last Updated
：2025/12/02
Sothic year
（ plural ）
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(astronomy) The span of time between successive heliacal risings of the star Sirius, equivalent to almost precisely 365¼ days.
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Sothic year
Ancient Egyptian priests used the Sothic year, tied to the heliacal rising of Sirius, to calibrate their calendar.
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Ancient Egyptian priests used the Sothic year, tied to the heliacal rising of Sirius, to calibrate their calendar.
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