But the advice is mixed for summer flights. âI would suggest buying your airfares for summer as soon as you can,â said Krista Pappas, global travel industry director for Bing, citing high fuel prices, tight seating capacity and strong consumer demand as a recipe for rising rates.
A sidereal period is also defined as the position of an object with respect to the stars. The synodic month is a bit longer than the sidereal month. When a synodic month lasts 29 days, 12 hours, and 44 minutes, a sidereal month lasts 27 days, 7 hours, and 43 minutes.
Synodic period. Written By: Synodic period, the time required for a body within the solar system, such as a planet, the Moon, or an artificial Earth satellite, to return to the same or approximately the same position relative to the Sun as seen by an observer on the Earth.