Question

What is meant by each of the following
terms
(a) Full moon
(b) New moon
(c) Lunar month
(d) Tithi​

Answer 1

a) The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective. ... The full moon occurs roughly once a month.

b) In astronomy, the new moon is the first lunar phase, when the Moon and Sun

c) A lunation or synodic month is the average time from one new moon to the next.

d) In Vedic timekeeping, a tithi is a [duration of two faces of moon that is observed from earth], or the time it takes for the longitudinal angle between the Moon and the Sun to increase by 12°.