The world of Aetheris is circled by two Suns and three Moons. While those are also physical bodies, they are also deeply linked with some Gods.
What the sky actually looks like
Midday, both suns up
Helios is the dominant light - clean, white, familiar. Emberia sits offset from it, smaller and distinctly orange-red. If you stare at them together the effect is slightly wrong, like a fire burning next to a lamp. The combined heat is noticeable. On clear days, shadows are faintly doubled - a sharp shadow from Helios and a shallower one at a different angle from Emberia.
Late afternoon, Emberia alone
The light goes amber. Everything looks like it’s been left in the sun a bit too long. Shadows stretch east. It’s not dark, not remotely, but the quality shifts enough that animals change their behaviour and farmers wrap up field work. On the 15th of each month, this is when the Scorch falls across the Wastelands - Emberia’s angle concentrates into something that burns the ground.
A Lunestria night
When she’s full, you can read by her. Cold, clean light. Crescentia, if she’s up, sits smaller nearby - grey against silver, a bit like a thumbprint on a mirror. Together they cast two sets of faint shadows, one sharp and one smudged. Sailors work through Lunestria nights without complaint.
A Serenis night
Subtle. She doesn’t illuminate the way Lunestria does - it’s more that the sky looks deeper when she’s up, the blue-white tint faint enough that you might think you imagined it. The night feels quieter. Oneiroa’s temples light their lanterns and open their doors. If a comet falls - a bright streak, fast and silent - the whole thing lasts two or three seconds before it’s gone.