What time of day are you most productive? Day or night?

Today, we launched Undesk, a virtual office for max productivity. https://www.producthunt.com/post... And I wanted to ask the community: What time of day are you most productive? Day or night? Undesk can visualize your productivity level in a timeline with a feature called Productivity Tracker. I'm usually most productive in the morning and before bed. I can rarely get into a flow state right after lunch... Let me know your pattern!