What time is best to take the moxifloxacin?

I was diagnosed on Friday afternoon, was prescribed 1x7 400mg moxi, and took my first dose on Sunday evening. I did not feel very sick or nauseous, but oh my god I had trouble with sleeping... it may also be due to the fact that I was very very nervous for taking this strong pill. I have been very anxious and scared since getting the diagnosis. Is it bad to take the moxi at another time today (monday) or should I keep taking it at the evening and just bare with the side effects?