Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
춘분은 낮과 밤의 길이가 같아지는 날입니다.chunbun-eun naj-gwa bam-ui giri-ga gat-ajineun nal-imnida.The vernal equinox is the day when the length of day and night are equal.