I structure my days chronologically, but it occurred to me there might be other ways to map out your day.
I'm very linear in general so I find it very helpful to map out my day hour by hour. This helps me prepare for what's coming up. If I need to bring something with me, like my kids' sports gear when I pick them up from school, I write that into the hour before pickup so I remember to have those things with me when I walk out the door.
Generally my days are structured as "before pickup" and "after pickup." During the day when my kids are at school is when I do my blog posting, housework, grocery shopping, phone calls, errands, and whatever else I need to do that day. After pickup it's a whirlwind of activities, practices, homework and projects. So I know when I write out my tasks for the day that if I don't have time to do it before I leave to pick them up, it's not going to get done that day. This helps me be more realistic about what I can accomplish in a day.
It's hard for me to imagine a non-chronological day, but I can guess for people who don't need an hourly schedule there might be different ways to structure their days. Maybe they use blocks of time to work on projects. Some freelancers and contractors might work on things when they can and total up their billable hours as they happen.
Do you structure your days in a non-chronological way? How does that work for you?