Mother's Day is a celebration honoring mothers and celebrating motherhood, maternal bonds and the influence of mothers in society. It is celebrated on various days in many parts of the world, yet most commonly in March, April, or May. It complements Father's Day, the celebration honoring fathers.
Celebrations of mothers and motherhood occur throughout the world; many of these can be traced back to ancient festivals, like the Greek cult to Cybele, the Roman festival of Hilaria or the Christian Mothering Sunday celebration. In most countries, Mother's Day is a recent observance derived from the holiday as it has evolved in America. When it was adopted by other countries and cultures, it was given different meanings, associated to different events (religious, historical or legendary), and celebrated on a different date or dates. Some countries already had existing celebrations honoring motherhood, and their celebrations have adopted several external characteristics from the US holiday, like giving carnations and other presents to your own mother. The extent of the celebrations varies greatly. In some countries, it is potentially offensive to one's mother not to mark Mother's Day. In others, it is a little-known festival celebrated mainly by immigrants, or covered by the media as a taste of foreign culture.
Source: http://en.wikipedia.org/wiki/Mother'sDay
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