* It has Two kinds of meanings
one is literally "just one day" from morning to night
좋은 하루 보내세요(formal)
좋은 하루 보내(informal, between friends or intimacies)
anther is how your life is going.
잘 지내길 바래요. 좋은 일만 있길 바래요(formal)
잘 지내길 바래, 좋은 일만 있길 바래(informal)