Up to him. Diana will keep going indefinitely. It's getting late—did that a while ago, actually—but she has yet to notice.

He'll have fun, then, he has a very good relationship with his sleep.

Magic! Math! Ways to propitiate the relevant spirits so they stay happy with doing things when requested! Astronomy depicted on some really ancient display for reasons, probably. It's kind of disjointed between one topic and the next, but she doesn't seem to be running out of information about what constellations can do what when or where.

Diana's preferred caffeine delivery mechanism is tea; she's drinking rather a lot of it and refilling his on the rare occasions when they aren't distracted.

Sure. He'll keep going for as long as she will.

This will get them into territory labeled "eventually the sun rises."

Heeee this is fun.

And eventually the Astrologer starts yawning. Caffeine only goes so far for people with fewer superpowers.

Sadde's body: is pretty good at being a body. Best part of implement-ing it.

"I guess I should be going."

Diana looks out the window. "Oh. Probably. But the– right.

You'll be welcome back here any time you can come; this was the most fun I've had with magic in ages."

He beams. "Awesome. I'll definitely swing by more often."

She smiles and wishes him a good night. Morning. Whichever.