First Mother's Day

10 May
Although many Mother's Day celebrations world-wide have quite different origins and traditions, most have now been influenced by the more recent American tradition established by Anna Jarvis, who celebrated it for the first time in 1908, then campaigned to make it an official holiday.
Mother's Day was established by Anna Jarvis with the help of Philadelphia merchant John Wanamaker following the death of her mother, Ann Jarvis, on May 9, 1905. A small service was held on May 12, 1907 in the Andrew's Methodist Episcopal Church in Grafton, West Virginia, where Anna's mother had been teaching Sunday school. The first "official" service was on May 10, 1908, in the same church, accompanied by a larger ceremony in the Wanamaker Auditorium in the Wanamaker's store in Philadelphia. The next year the day was reported to be widely celebrated in New York. Jarvis then campaigned to establish Mother's Day first as a U.S. national holiday and then later as an international holiday.

Carnations
Carnations have come to represent Mother's Day since Anna Jarvis delivered 500 of them at the first celebration in 1908. Many religious services held later adopted the custom of giving away carnations. This also started the custom of wearing a carnation on Mother's Day. The founder, Anna Jarvis, chose the carnation because it was the favorite flower of her mother.
In part due to the shortage of white carnations, and in part due to the efforts to expand the sales of more types of flowers in Mother's Day, florists invented the idea of wearing a red carnation if your mother was living, or a white one if she was dead; this was tirelessly promoted until it made its way into the popular observations at churches.

Dates around the world
As the United States holiday was adopted by other countries and cultures, the date was changed to fit already existing celebrations honoring motherhood, such as Mothering Sunday in the United Kingdom or, in Greece, the Orthodox celebration of the presentation of Jesus Christ to the temple (2 February of Julian Calendar). Both the secular and religious Mother Day are present in Greece. Mothering Sunday is often referred to as "Mother's Day" even though it is an unrelated celebration.
In some countries the date was changed to a date that was significant to the majority religion, such as Virgin Mary Day in Catholic countries. Other countries selected a date with historical significance. For example, Bolivia's Mother's Day is the date of a battle in which women participated.
Ex-communist countries usually celebrated the socialist International Women's Day instead of the more capitalist Mother's Day. Some ex-communist countries, such as Russia, still follow this custom or simply celebrate both holidays, which is the custom in Ukraine. Kyrgyzstan has recently introduced Mother's Day, but International Women's Day remains a more widely popular holiday.