주간day 백주daytime 불철주야being day and night; being around the clock 주경야독working during the day and studying at night

야간night 야경night view; nightscape 야근working overtime; night duty 야시장night market 야식late-night meal; midnight snack 초야the first night 백야white night 불야성being nightless; being all-night 불철주야being day and night; being around the clock 심야dead of the night; late night