Personally, I would go for naming them after the twelve largest moons in the solar system, since they were originally (and still are in many cultures) based on the lunar cycles, giving the months Ganymede, Titan, Callisto, etc.
What would you rename the months?
The Japanese got it right: Just number them. First month, second month etc.
Weird that they sold one off in the middle of the year to advertise a media streaming device/app though.
I mean, they also named the one before it after one of their favorite board games, so I think anything’s fair game.
Same in Chinese