Translation of "Equinox" in Japanese

No heat or cold lasts beyond the equinox.

暑さも寒さも彼岸まで。

Autumnal Equinox Day falls on Friday this year.

秋分の日は、今年は金曜日に当たります。

From the spring equinox the days become longer than the nights, and living creatures are becoming full of life.

春分の日を境に昼が夜より長くなり、生物はかなり生気に満ちてきます。