Day Calendar, Day Agenda

My Friend and I are developing an app, that among other things has a calendar. I have already found the most popular month and week calendar on this forum and implemented it with very little problem, but now I am going for a day view. I am finding it hard to wrap my head around the problem. I would show you my work, but frankly I’m not sure how to begin this project correctly. Any direction at all would be helpful, thanks!