one or two days

lit. once married for the first night, there are 100 days of gratitude, meaning one must treasure their partner

All day long

(n.) a day or one day; (slang) used as part of a prepositional phrase (一日都係) to blame someone (or something or 'a reason') for some negative things that have happened, all because of; owing to; thanks to (e.g. 一日都係你 means "It's all because of you" or "Thanks to you".)

three meals a day, literally "three meals in a day"

all day long

seven days, seventh [date]

thirty one days, thirty-first [date]

thirty days, thirtieth [date]

three days, third [date]

Three days and two nights

A few days

incense burned for three days

coming soon (movie)

doomsday

China-Japan

nine days, ninth [date]

twenty one days; twenty-first [date]

twenty seven days; twenty-seventh [date]

twenty tree days; twenty-third [date]

twenty nine days; twenty-ninth [date]

twenty two days; twenty-second [date]

twenty five days; twenty-fifth [date]

twenty eight days; twenty-eighth [date]

twenty six days; twenty-sixth [date]

twenty four days; twenty-fourth [date]

twenty days; twentieth [date]

two days; second [date]

five days; fifth [date]

Human Day, on the 7th day of first month for the lunar calendar, the day when human being were made