ONE DAY


Meaning of ONE DAY in English

at some time in the future, or on a particular day in the past :

One day, I want to leave the city and move to the country.

One day, he walked out of the house with a small bag and never came back.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.