Hi!
Here is a little guide for that:
[SPOILERS]
1.) You need the clue that's with the skeleton character. But you can't access it right away, you have to do something first: "anything protected by a living skull ... is inaccessible"
2.) The skeleton's name can be found in the
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"Enemies of the empire" text.
3.) If you follow this route, you will find the answer to the timechanger stone's first question. (What day is it today?)
[/SPOILERS]
Let me know if you need more help!
Thank you for playing!