Question

What is the difference between a synodic period and a sidereal period? What is the difference between a synodic month and a sidereal month?

Answer 1

However, because the Earth is constantly moving along its orbit about the Sun, the Moon must travel slightly more than 360° to get from one new moon to the next. Thus, thesynodic month, or lunar month, is longer than thesidereal month. A siderealmonth lasts 27.322 days, while a synodic month lasts 29.531 days.

However, because the Earth is constantly moving along its orbit about the Sun, the Moon must travel slightly more than 360° to get from one new moon to the next. Thus, thesynodic month, or lunarmonth, is longer than thesidereal month. A sidereal month lasts 27.322 days, while a synodic month lasts 29.531 days.