As much fun as the time machine sky sequence* was, I'm pretty sure whatever astronomy software Layla was using would have been able to do that (because every piece of astronomy software I've ever seen or used can); all they needed was an approximate date, and well . . . carbon dating is a thing, so they should have at least a vague idea of how old the mummy was. Hell, by his own admission Khonshu can remember *every* night. Can he not count too? I mean it's simple arithmetic, no?
* Side note: what the hell even was that?! An illusion? Did the earth just get moved back in time, or was the entire universe spun it's previous configuration? The makers of this show know that there's really no such thing as "the sky" that can be altered the same way "the view out your window" isn't just a picture, right?! How has this not set off every alarm bell in the cosmos? This is the kind of thing galactic empires, celestials, and higher dimensional being are probably going to take issue with. Let's hope it's an illusion because otherwise that's a terrifying amount of cosmic power for an overgrown pigeon. I mean if he can do that, why does he need a mortal meat puppet that punches things?
* Side note: what the hell even was that?! An illusion? Did the earth just get moved back in time, or was the entire universe spun it's previous configuration? The makers of this show know that there's really no such thing as "the sky" that can be altered the same way "the view out your window" isn't just a picture, right?! How has this not set off every alarm bell in the cosmos? This is the kind of thing galactic empires, celestials, and higher dimensional being are probably going to take issue with. Let's hope it's an illusion because otherwise that's a terrifying amount of cosmic power for an overgrown pigeon. I mean if he can do that, why does he need a mortal meat puppet that punches things?