Opportunities for rest ?

[Athanor]

I start playing with Arma 2 - Red Harvest - Dogs of War:
How I can take a break to sleep at night for several hours.
You can help me?

[Commonplace]

I dont think that is possible but ie you could let the computer run and go outside/ work and some back. Press o for watch, so you know the actual time (which is measured in real life seconds)