Anytime that is necessary.
No set time. I do my writing, filing and paperwork 12-2 pm Mon-Fri.
You must mean the incoherent babble I use to write. I'm not even capable of that anymore.
Night
Usually in the morning so I can get the bills out on the box. Don't have many but that's when I fill them out.
when I'm depressed at night
Night: It's the time that I know I should be doing something else although ideas just seem to flood.
There is no exact time for the muse. It may come up at any part of the day. So, all you need to do is just to catch that time when your fingers know what to write. Deadlines may also make you write slow and about nothing. So, in case you feel this is the case, go to the site I frequently use. Google Marvelous Essay and you will find out why I like it