| The Japanese Cabinet decides upon Shubun No Hi based on the astronomical Autumnal Equinox calculated by the National Astronomical Observatory of Japan and, an announcement of the decision is officially gazetted in February the previous year. |
秋分の日は、国立天文台の算出する天文学的秋分日を元にして閣議決定され、前年2月に官報で告示される。 |