noun
definition
A month of an average of approximately 29.53 days, measured from a lunar phase until the return of that same phase.
definition
The irregular period from one new moon until the next.
Examples of lunation in a Sentence
The solar day, the solar year, and the lunar month, or lunation, may therefore be called the natural divisions of time.
The method is based upon consideration of the degree of the previous syzygy (lunation).
It must happen sometimes that in the course of a lunation the sun enters into no new sign; in this case the month is intercalary, and is called by the same name as the preceding month.
But the fourteenth of this moon falls at the latest on the 18th of April, or 29 days after the 20th of March; for by reason of the double epact that occurs at the 4th and 5th of April, this lunation has only 29 days.
The Calendar Is Constructed On The Assumptions That The Mean Lunation Is 29 Days 12 Hours 44 Min.
The new Moon chart ascendant shows Jupiter conjunct at Paris, and for Toronto, is on the midpoint of the lunation and Saturn.
You may use this lunation perhaps to resolve a conflict in a difficult situation with a person of authority or a co-worker.
The method is based upon consideration of the degree of the previous syzygy (lunation ).
Though the /see' are thus strictly portions of solar time, yet what is remarkable, though not peculiar to China, they give their name to the lunar months, each month or lunation having the name of the chung-ki or sign at which the sun arrives during that month.
As the /see' is longer than a synodic revolution of the moon, the sun cannot arrive twice at a chung-ki during the same lunation; and as there are only twelve tsee, the year can contain only twelve months having different names.
As It Had Now Been Discovered That The Exact Length Of The Lunation Is A Little More Than Twenty Nine And A Half Days, It Became Necessary To Abandon The Alternate Succession Of Full And Deficient Months; And, In Order To Preserve A More Accurate Correspondence Between The Civil Month And The Lunation, Meton Divided The Cycle Into 125 Full Months Of Thirty Days, And 110 Deficient Months Of Twenty Nine Days Each.
Hence, If In That Year The Epact Should Be 19, A New Moon Would Fall On The 2Nd Of December, And The Lunation Would Terminate On The 30Th, So That The Next New Moon Would Arrive On The 3 Ist.