26 hours (DS9!)
Oxygen mix, methane smell
All over the place, but no arctic
1.56 standard (yikes!)
Freakin' Zillo Beasts
Malastare was the homeworld of the Dugs and the Zillo Beasts. Clearly, somebody in the Star Wars universe screwed up, because Malastare actually had multiple environments. It had jungles, swamps, deserts, mountains, forests, wastelands, and lots of podracing tracks. It also had half again standard gravity, but for some reason nobody ever commented on it, and Jedi could still jump as far as they wanted, and R2-D2 could still fly with no problem.
Even though Malastare was the Dug homeworld, it was represented in the Galactic Republic by the Gran, who had sent a few colonists there and screwed over the indigenous population. The Republic was tasked with overseeing the settlement between the two species... and promptly sided with the Gran, because bribes.
Malastare's most valuable export was fuel. They had plenty. (They actually had methane lakes. Great fishing on a methane lake, but there's always some jerk who tries lighting up a cigarette and kills everybody.) During the Clone Wars, the Republic and the Confederacy fought a battle over possession of Malastare's fuel reserves, but in the middle of a perfectly reasonable battle, a Zillo Beast appeared and started rampaging all over the place.