Mother's Day is a holiday celebrated in many countries around the world, but not all nations celebrate on the same day. In the United States, Mother's Day is always celebrated on the second Sunday in May. Many other countries such as Denmark, Finland, Italy, Turkey, Australia and Belgium also celebrate Mother's Day on the same day as the United States. England, however, celebrates Mother's Day on the fourth Sunday of Lent, and in Argentina it is the second Sunday in October. International Mother's Day is actually celebrated on May 11. Mother's Day is a holiday celebrated in many countries around the world, but not all nations celebrate on the same day. In the United States, Mother's Day is always celebrated on the second Sunday in May. Many other countries such as Denmark, Finland, Italy, Turkey, Australia and Belgium also celebrate Mother's Day on the same day as the United States. England, however, celebrates Mother's Day on the fourth Sunday of Lent, and in Argentina it is the second Sunday in October. International Mother's Day is actually celebrated on May 11.