Earliest date for the autumnal equinox in the Northern Hemisphere and the vernal equinox in the Southern Hemisphere: Autumnal Equinox Day (Japan)

Autumnal Equinox Day

Public holiday in Japan

Autumnal Equinox Day is a public holiday in Japan that usually occurs on September 22 or 23, the date of Southward equinox in Japan Standard Time. Due to the necessity of recent astronomical measurements, the date of the holiday is not officially declared until February of the…