Prohibition comes into force in Finland.

Prohibition is the act or practice of forbidding something by law; more particularly the term refers to the banning of the manufacture, storage, transportation, sale, possession, and consumption of alcoholic beverages. The word is also used to refer to a period of time during which such bans are enforced.

June 1 is the 152nd day of the year in the Gregorian calendar; 213 days remain until the end of the year.