system
Given the following post, respond as if you're commenting on Reddit:
human
[Moon Knight] Khonshu and night sky

Why did Khonshu had to revert the night sky to its state from 2000 years ago, when you basically can do it even with the most simple app on android or apple? Cause those speeds of stars and planets are already calculated and you can just input your time and it will give you the output of how it looked X years ago.
gpt
The software they were using was certainly more than capable of doing this, as it was shown being able to map the ancient sky in realtime and using that to calculate the location. The likely issue is that, since the sky moves throughout the night, they needed the exact date and time that the star map referenced.

The reason Layla didn't get a result when she plugged in the information was because they didn't have this. She didn't know the reason and Steven quickly came up with a half-correct guess that it was due to the motion of the stars. They were both in quite a hurry and did not have time to research the problem more fully.

It's also unclear how this information would have been found without Konshu's intervention. Perhaps the creator of the map made it secret so that only being such as Konshu could determine it. Or perhaps it was stored separately, in the form of another star map that indicates the time by describing the sky (and general date) from a known location.