What the revolution time of the planet mercury?
65.6 days. This is a 3:2 resonance with it’s orbital period which is a form of tidal locking, because it is so near the Sun. Some older sources state that Mercury is 1:1 tidally locked – that is the same side always faces the Sun. However, this is due to the fact that when Mercury is at maximum elongation from the Sun, and easiest to observe, it is always showing the same side to us. The is a due to a combination of the 3:2 ratio and an unfortunate coincidence. The Mercurian solar day, as opposed to the period of rotation, is 58.6 days.
