5 is an ungodly hour for me.
→  5시면 저한테는 꼭두새벽이에요.

[예문]
A : I exercise in every morning.
     난매일아침마다 운동해.

B :What time do you get up?
   몇시에일어나는데? 

A :5 o'clock. 
   5시.

B : 5 is an ungodly hour for me.
    나한테 5시는꼭두새벽인데.
   There's no way I can get up that early.
   나는그시간엔 절대로 못일어나.

※  꼭두새벽  : an ungodly hour