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
천문력은 별의 위치를 계산하는 데 사용됩니다.cheonmunnyeogeun byeol-ui wichi-reul gyohwanhaneun de sayongdoemnida.The ephemeris is used to calculate the position of stars.