It's definitely the best time. It's also the most convenient. It's not like you were going to get any sleep, anyway.
That thing that you said to your boss at work. Did he take it in worst possible way, completely unaware of your intentions? Did you make a mistake in that report that you emailed out? Remember that one time in the sixth grade when you made a fool of yourself in the middle of class? Think about that one for a while.