What is lunation?

Lunation

Lunation is the mean time for one lunar phase cycle (i.e., the synodic period of the Moon). It is on average 29.530589 days, or 29 days 12 hours 44 minutes and 3 seconds. The length of this cycle is linked to many phenomena in nature, such as the variation between spring and neap tides (the extreme highest and lowest tides, respectively).

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Some articles on lunation:

Lunation Number
... Lunation Number or Lunation Cycle is a number given to each lunation beginning from a certain one in history ... There are several series of lunation numbers in use ... The most commonly used is the Brown Lunation Number, which defines lunation 1 as beginning at the first new moon of 1923, the year when Ernest William Brown's ...
Seven-day Week - Origins
... The seven-day week is only 23.7% of a lunation, so a continuous cycle of seven-day weeks rapidly loses synchronization with the lunation.) Jews celebrated ... The seven-day week being approximately a quarter of a lunation has been proposed (e.g ... the seven-day week as a quarter of a lunation ...
Maya Calendars - Supplementary Series - Lunar Series - Lunation Length
... lunar month is 29.53059 days so if you count the number of days in a lunation it will be either 29 or 30 days ... the lunar month was 29 or 30 days as two glyphs a glyph for lunation length followed by either a glyph made up of a moon glyph over a bundle with a ...
Lunation
... Lunation is the mean time for one lunar phase cycle (i.e ... In a lunar calendar each month corresponds to a lunation ... Individual lunations vary in length by several hours, because of the eccentricity of the orbits of the Moon and Earth ...
Maya Calendars - Supplementary Series - Lunar Series - Lunation Number and Lunar Deity
... The Maya counted the lunation in a cycle of six, numbered zero through 5 ... This was written as two glyphs a glyph for the completed lunation in the lunar count with a coefficient of 0 through 5 and a glyph for the lunar deity that ruled the ...