For the writers here, the favorable planetary hours for writing is Mercury, and for literary pursuits, The Moon. I know the Moon isn't technically a planet, but its energies are calculated (I don't know why) as such. So, visit the handy dandy web page Lunarium - Planetary Hours and make sure your correct time zone is selected. Look for Mercury and Moon symbols, and those will be your most favorable times for writing.
I haven't tried this yet, but I'm looking forward to it.