Mother's Day

In USA they celebrate the second Sunday of May as Mother’s day. According to Wikipedia “The modern holiday of Mother's Day was first celebrated in 1908, when Anna Jarvis held a memorial for her mother in Grafton, West Virginia. She then began a campaign to make "Mother's Day" a recognized holiday in the United States. Although she was successful in 1914, she was already disappointed with its commercialization by the 1920s. Jarvis' holiday was adopted by other countries and it is now celebrated all over the world. In this tradition, each person offers a gift, card, or remembrance toward their mothers, grandmothers, and/ or maternal figure on mother's day.

In 1912, Anna Jarvis trademarked the phrases "second Sunday in May" and "Mother's Day", and created the Mother's Day International Association.^[8] She specifically noted that "Mother's" should "be a singular possessive, for each family to honor its mother, not a plural possessive commemorating all mothers of the world."^[9] This is also the spelling used by U.S. President Woodrow Wilson in his 1914 presidential proclamation, by the U.S. Congress in relevant bills,^[10][11] and by various U.S. presidents in their proclamations concerning Mother's Day.^[12] However, "Mothers' Day" (plural possessive) or "Mothers Day" (plural non-possessive) are also sometimes seen.”

 In UK the story is different as found on the web:

When is Mother's Day 2014?

Mother's Day - or Mothering Sunday - falls on March 30 this year, so you've still got time to plan ahead to the annual celebration.

Why does it change every year?

Mothering Sunday does not have a fixed date and so it can even be in different months sometimes.

It has its roots in the Church and falls on the fourth Sunday of Lent. Mothering Sunday can fall at the earliest on 1 March and at the latest on 4 April.

What's the history of the celebration?

In the UK, Mothering Sunday is believed to have evolved from the 16th-century practice of visiting one's mother church annually.

Most churchgoers used to worship at their nearest parish, also known as a daughter church, every Sunday.

It was considered important to return to the main church in the area, or mother church, once a year and people would do so in the middle of lent.

This also became a time for families to reunite. It was not unusual for children as young as 10 to leave home for work in those days and they would be given the day off to return to their mother church.

Historians believe the tradition of the children picking flowers along the way to take home led to the tradition of giving presents to mums.

It has now evolved into a day of appreciation where mums are given flowers and other gifts as a sign of thanks.