Month

A month is a unit of time, used with calendars, which was first used and invented in Mesopotamia, as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept arose with the cycle of moon phases; such months (lunations) are synodic months and last approximately 29.53 days. From excavated tally sticks, researchers have deduced that people counted days in relation to the Moon's phases as early as the Paleolithic age. Synodic months, based on the Moon's orbital period, are still the basis of many calendars today, and are used to divide the year.

Read more about Month:  Types of Months, Calendrical Consequences

Famous quotes containing the word month:

    After a month or so I get used to the book’s final stage, to its having been weaned from my brain. I now regard it with a kind of amused tenderness as a man regards not his son, but the young wife of his son.
    Vladimir Nabokov (1899–1977)

    As full of spirit as the month of May,
    And gorgeous as the sun at midsummer.
    William Shakespeare (1564–1616)

    It makes little sense to spend a month teaching decimal fractions to fourth-grade pupils when they can be taught in a week, and better understood and retained, by sixth-grade students. Child-centeredness does not mean lack of rigor or standards; it does mean finding the best match between curricula and children’s developing interests and abilities.
    David Elkind (20th century)