Solo devs: I've been tracking which hours of the day I actually ship vs which I just "work"

After 3 months of solo building on evenings/weekends, I noticed my 7–9pm block is where ~80% of shipped code lives. Everything else — mornings, lunch breaks, weekend afternoons — turns into planning, browsing, or half-baked drafts that get thrown out.

Two things I had to change to protect that window: killing all notifications until 9pm, and doing planning the night before so I don't waste the shipping hours on "what should I build today."

Anyone else tracked this? What's your actual shipping window, and what did you have to move around to protect it?