Unique seasons

[Nasikabatrachus]

When I saw this excellent addition in the changelog, I got a little curious about how seasons on Mars work.

"Wrote a new time-of-day calculator that determines a proper sun glow from latitude, time of year, and time of day. Now, equatorial regions have the same long days year-round, while northern areas have shallow days or varying lengths, and can even have no proper night at certain times of year."

Apparently, Mars' closest approach triggers massive global dust storms:

"The 25.2° tilt of the planet's equator with respect to the plane of its orbit imposes an Earth-like progression of the seasons. The approximate alignment of the Martian northern winter (southern summer) solstice with the planet's closest approach to the Sun appears to trigger occasional global dust storms sometimes lasting up to several weeks."

http://www.giss.nasa.gov/research/briefs/allison_02/

I think it would be very neat if Rimworld had something analogous to this. Maybe not global dust storms, but maybe instead once or twice yearly extreme weather events that push the limits of the biome's weather patterns and mark that time of year as special and interesting.