Daily Archives: September 15, 2025

Autumnal Equinox Day (秋分の日 Shūbun no Hi) is a public holiday in Japan that usually occurs on September 22 or 23, the date of Southward equinox in Japan Standard Time (autumnal equinox can occur on different dates for different timezones).  Due to the necessity of recent astronomical measurements, the … Continue reading →