The easiest way is to use, ~째 날 (in KR-number counting) Thus, Day 1: Finished --> 첫째 날: 끝났다 Day 2: Finished --> 둘째 날: 끝났다 Day 3: Finished --> 셋째 날: 끝났다... === 좋은 하루를 지내세요.／I wish you a good day.