At Mars' equator how long does twilight last? With Mars' thinner atmosphere I'm assuming twilight would not last as long compared to the duration on Earth.  Has there been any determination of the length of twilight on Mars at the equator or any other latitude?
According to https://mars.jpl.nasa.gov/MPF/science/clouds.html twilight lasts up to two hours because of dust high up in the atmosphere scattering the sunlight. Mars Pathfinder is in Ares Vallis, 3°North.