The Lunar cycle is 29 &#189; days, so each month is either 29 or 30 days, depending on when light from the New Moon is spotted.
(light from the New Moon; is spotted; ) (each month; is; either 29 or 30 days; T:days) Context(each month is,List([38, 51))):(The Lunar cycle; is; 29 &#189)
each month is,List([38, 51))
light from the New Moon each month The Lunar cycle
is spotted is is
either 29 or 30 days T:days
29 &#189