I think the best time of the day is the early Spring or Fall morning, between 7 AM and 8 AM. It's quiet and peaceful. I can hear the birds singing sweet songs, creating a peaceful ambience. When I go out for a pre-workday walk, the air is cool and refreshing. Not cold. The sun rises over the horizon and the sunlight filters through the branches of the budding trees magically casting shadow and golden rays of light in just the right places.
Maybe I could get more dynamic range and better image quality if I had walked with my Fuji X-T3 and XF26mmF2.8 R WR lens. But the iPhone 11 Pro fits into the pocket of my pants without bulging offensively or bouncing uncomfortably with each step.