The first celebrations in honor of mothers were held in ancient Greece, where spring clebrations were held in honor of Rhea, the mother of gods. ..... Although they do not all fall on the same day, countries such as Finland, Australia, and Japan do celebrate Mother's Day on the same day as the United States.
――南山大学(人文学部キリスト教・人類文化学科、経済学部)――2003年