I feel mostly inspired in the morning, when I'm sitting on the train on my way to the office. That's when I mostly post my photo's on my blog, and that's when I mostly reply to comments on my posts. 

Commenting and reading other people's posts happens more throughout the day, not on a specific time of day.

And all of a sudden, creativity and inspiration can strike on any time of any day. And when it does, I let it strike, and try to use it! ;-)