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
한국의 역법은 태음태양력을 기반으로 합니다.Hanguk-ui yeokbeop-eun taeumtaeyangnyeok-eul giban-euro hamnida.The Korean calendar system is based on the lunar-solar calendar.