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synodic month
noun
A month of approximately 29.53 days, measured from a lunar phase until the return of that same phase. The long-term average duration is 29.530 588 days (29 d 12 h 44 min 2.8 s), or about 29 ½ days.
synonyms
Exact(14)
The synodic month grew to be the basis of the calendar month.
The synodic month (about 29.531 days) is the average time from one full moon to the next full moon.
The rate of change in the synodic month was minimal for most of the Cretaceous but has accelerated since.
Taking a synodic month to be 29.5 days, they then computed the difference between 12 of these lunations and their tropical year, which amounted to 11 days.
The tropical year and the synodic month are incommensurable, 12 synodic months amounting to 354.36706 days, almost 11 days shorter than the tropical year.
Among primitive societies, the month was determined from the phases; this interval, the synodic month, is now known to be 29.53059 days.
Similar(46)
The dynamics are completely different from the Earth Sun system in that the sun line direction constantly changes in the rotating frame but rotates once per synodic lunar month.
The female menstrual cycle has been shown to have its mean length indistinguishable from the synodic lunar month [ 29, 30], and women whose cycles average 28 30 days tend to have their menstrual period phase-linked to the lunar month [ 31, 4].
One synodic lunar month counts 29.53 days (29 d. 12 h. 44 m). which is the period of time required for the moon to travel from one position relative to the sun as seen from the Earth (e.g. full moon) and return to the same position.
The eclipses of the Sun and the Moon occur at new moon and full moon, respectively, so that one basic time period involved in the occurrence of eclipses is the synodic month i.e., the interval between successive new moons, as seen from Earth.
While Soma25 comes out at the end of the month, today Soma shared with THUMP a new track from the compilation by veteran acid techno DJ Josh Wink, "Synodic Period".
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