Lunar month circular, the speed of Earth's progression around the Sun varies during the year. Thus, the angular rate is faster nearer periapsis and slower near apoapsis. The same is so for the Moon's orbit around the Earth. Because of these variations in angular rate, the actual time between lunations may vary from about 29.18 to about 29.93 days. The long-term average duration is days (29 d 12 h 44 min 2.8016 s). The synodic month is used to calculate eclipse cycles. It is customary to specify positions of celestial bodies with respect to the vernal equinox. Because of Earth's precession of
How to Lose a Guy in 10 Days "Isadora Diamond" named after Isadora Duncan. The 80-carat yellow diamond in the necklace was designed by Harry Winston and is worth $6 million. "How to Lose a Guy in 10 Days" received mixed reviews from critics. Metacritic gave the film a score of 45 out of 100, based on 31 critics, indicating "mixed or average reviews". Rotten Tomatoes gave the film a rating of 42%, based on 149 reviews, with an average rating of 5/10. The site's critical consensus reads:"Matthew McConaughey and Kate Hudson are charming together, but they can't overcome "How to Lose a Guy in 10 Days"' silly