Barsoom (better known to Earthmen as Mars, by the inhabitants of Jupiter as Garobus) is the fourth planet in the Solar System, and the main setting of Edgar Rice Burroughs’ Martian novels.

It is orbited by the moons Thuria (Phobos) and Cluros (Deimos). In the distant past, it bore five oceans, the largest and mightiest of them Throxeus. Today these oceans are all but dried out, and the planet now has very little water.  Most Barsoomians believe there is a body of water in the south called Korus.

Some Facts about Barsoom

A Barsoomian day is 24 hours, 36 minutes long to an Earthman, roughly 1.025 Earth days.  

A Barsoomian year is 687 Earth days long, roughly 1.88 Earth years.

A Barsoomian year is called One Ord.

A Barsoomian Month is called a Teean, and is 67 days long.

The Barsoomian Day is called a Padan.

Days, or Padan, are further broken down.

A Padan lasts 10 zodes, each zode is 50 xats, and each xat is 200 tal.

A zode is 2 hours, 27 minutes and 42 seconds long in Earth time.  A xat is 2 minutes, 57 seconds long, and a tal is .886 seconds long.

Zodes are also individually numbered, the first of which begins at the dawn of the winter solstice.