Christopher Columbus astronomy, and history. He formulated a plan to seek a western sea passage to the East Indies, hoping to profit from the lucrative spice trade. After years of lobbying, the Catholic Monarchs of Spain agreed to sponsor a journey west, in the name of the Crown of Castile. Columbus left Spain in August 1492 with three ships, and after a stopover in the Canary Islands made landfall in the Americas on 12 October (now celebrated as Columbus Day). His landing place was an island in the Bahamas, known by its native inhabitants as Guanahani; its exact location is uncertain. Columbus
Month quarter of a day shorter than the solar year and stellar events "wandered" through the calendar, it is referred to as Annus Vagus or "Wandering Year". The Nisga'a calendar coincides with the Gregorian calendar with each month referring to the type of harvesting that is done during the month. This calendar was proposed during the French Revolution, and used by the French government for about twelve years from late 1793. There were twelve months of 30 days each, grouped into three ten-day weeks called "décades". The five or six extra days needed to approximate the tropical year were placed after