equinozio di primavera
（天文学）春分点（牡羊座の最初の点）
春分点は太陽が天の赤道を横切る瞬間を示し、北半球の春の始まりを告げます。
The vernal equinox marks the moment when the Sun crosses the celestial equator and announces the start of spring in the Northern Hemisphere.
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