How to change a time in LifeAfter?

You can't change the in-game time. It's based on the world clock. It is the default server time. However, I think you might be worrying about the camp patrol timings. If that so,you can ask the mayor or any official to change the time for patrol to one that suits your playing time. However, they might not change it if it affects a majority of the people in the camp. Another case is of the times events like the FURNITURE RECYCLE. This event's time is fixed. It can't be changed. If it doesn't suit your playing time, think of it as a bad luck. :(