It originated as a Christian feast day honoring one or two early Christian martyrs named Saint Valentine and, through later folk traditions, has become a significant cultural, religious, and commercial celebration of romance and love in many regions of the world.
Presidents' Day, officially Washington's Birthday, in the United States, holiday (third Monday in February) popularly recognized as honoring George Washington and Abraham Lincoln. The day is sometimes understood as a celebration of the birthdays and lives of all U.S. presidents.