My little moon-world (called the World) has roughly 33% of our Earth's mass and gravity, 40% the size, and 200% the atmospheric pressure at sea-level. It orbits a much larger gas giant (size and mass pending) Although our Earth exists "somewhere out there ", the world runs on its own periodic table of the elements, similar in many aspects to ours, but quirky in its own way. So, I have a few problems here. The first: When the world orbits behind the gas giant, a sort of "long night" occurs, lasting a little less than 5 days (light would bend around the gas planet and find its way to the moon, making the nights shorter than the days, like here on Earth, but more pronounced) Obviously, heat would be an issue. Well sort of. My little world has already a thick atmosphere, so the greenhouse Effect would also be more intense than on earth. Just not quite sure how low the temperature should drop. Also not quite sure how many "regular days" the planet would have before the long night. Which leads me to the second problem. Time Here's a very short kinda table I rigged up. One beat = 1.57 Earth seconds One moment (100 beats) = 157 seconds (2.6 minutes) One hour (100 moments) = 4 hours and 21.66 minutes (4.3 hours) One day (10 hours) = 43 hours and 36.66 minutes (43.61 hours) One Long Night (5 days) = 9 days 2 hours 3 minutes and 33 seconds (9.09 days, 218.06 hours ) All these numbers can change. Right now they're pretty close to "desired values" though. There's also the issue of gravity too. Since the moon-world orbits a much larger planet, the gravitational pull is going to have a serious Effect on the tides, which is a serious thing because the majority of the surface of this moon-world is covered with an acidic liquid very similar to hydrochloric acid (the Acid Sea, it's called by the denizens) While very dangerous, the acid is very useful in a variety of applications not normally achievable without the advent of modern chemistry. But, I also don't know how acidic it actually is. What would the beaches look like? Would the shores all be rocky cliffs slowly eroding over time from the rise, swell and smash of the acidic waves on the shore? Getting a bit confused here. But as you can see, oftentimes one thing will lead to another. I have other concerns but for now I'd like some input on the above-mentioned setting.