The longest day
By Yugnat on 2009-05-26 18:02:17
On Venus, a day is longer than a year.
Details :
This is true considering sidereal days, as Venus needs 243 terrestrial days to rotate around itself, and 224.7 to complete its revolution around the sun.
A Venusian year thus lasts 0.924 Venusian day.
Yet, because of the retrograde rotation, the revolution of the planet around the sun is added to its rotation and a solar day (the time between two sunrises) lasts only 117 terrestrial days.