day

See:

An apple a day keeps the doctor away. at all hours (of the day and night) at all hours (of the night) at the end of the day be all in a day's work be as clear/plain as day be as honest as the day (is long) be the order of the day a black day call it a day carry the day day after day day and night day by day day in, day out a day late and a dollar short day of reckoning the day of reckoning day-to-day Don't give up the day job! Every dog has its day.

from day one get/have your day in court not give someone the time of day have a bad hair day have a field day have your day in court have had its/your day in the cold light of day in this day and age just another day (at the office) late in the day live to fight another day make a [day/night/weekend etc.] of it make someone's day make your day make my day name the day night and day a nine/one/seven-day wonder not your day not give someone the time of day

one day the order of the day the other day pass the time of day pass the time of day (with someone) (as) plain as day a rainy day fund a red-letter day Rome wasn't built in a day. save (something) for a rainy day save (something) for a rainy day save the day see the light see the light (of day) see the light of day seize the day take each day as it comes that'll be the day That'll be the day! Tomorrow's another day. win the day