Martian Calendar

In the 21st century it is expected that people will be settling Mars. Trucking on out their in their spaceship minivans and starting a life with 2.5 kids in tow. Well.....how are these people to know when the best time for moving would be? God only knows no one likes to move when it's raining. And what about vacationing on Mars? I wouldn't want to arrive with my summer clothes only to find that it's freezing on Mars. This site describes the Darian Calendar and gives the time of Martian seasons in respect to that of Earth. Kind cool.