draconic month.
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draconic month — noun A period of time between two consecutive passages of the Moon through the same orbital node. The draconic month is shorter than sidereal month, due to precession of the Moons orbit. It equals approximately 27 days 5 hours 5 minutes 35.8… … Wiktionary
draconic month. — See under month (def. 5) … Useful english dictionary
Month — For the Egyptian hawk god, see Monthu. 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… … Wikipedia
month — /munth/, n. 1. Also called calendar month. any of the twelve parts, as January or February, into which the calendar year is divided. 2. the time from any day of one calendar month to the corresponding day of the next. 3. a period of four weeks or … Universalium
month — n four weeks, thirty days, lunation, lunar month, solar month, calendar month, synodic month, sidereal month, anomalistic month, nodical month, draconic month … A Note on the Style of the synonym finder
draconic period — noun Etymology: Latin Dracon , Draco, a northern circumpolar constellation (from Greek Drakōn, from drakōn serpent) + English ic more at dragon : nodical month … Useful english dictionary
Lunar month — Animation of the Moon as it cycles through its phases, as seen from the Northern Hemisphere. The apparent wobbling of the Moon is known as libration. In lunar calendars, a lunar month is the time between two identical syzygies (new moons or full… … Wikipedia
nodical month — noun : the mean time of the moon s revolution in its orbit from ascending node to ascending node equal to 27 days, 5 hours, 5 minutes, 35.8 seconds of mean solar time called also draconic period … Useful english dictionary
Eclipse cycle — Animated graph of a the paths of totality of a solar eclipse cycle. Eclipses may occur repeatedly, separated by certain intervals of time: these intervals are called eclipse cycles.[1] The series of eclipses separated by a repeat of one of these… … Wikipedia
Saros cycle — The Saros cycle is an eclipse cycle with a period of about 18 years 11 days 8 hours (approximately 6585⅓ days) that can be used to predict eclipses of the Sun and Moon. One Saros after an eclipse, the Sun, Earth, and Moon return to approximately… … Wikipedia
