Days and Sections
Actually, days and sections mean the same thing in Hour by Hour!
Below are two sections and the button to create a new one:

People often use sections for individual days (often consecutive), but you don't have to. Other ways to use sections:
- Alternative plans for a single day. Hour by Hour supports this well: tap the
button on a schedule and choose
Duplicate, then tweak it.
- Different tracks for the same day at a conference.
- Different school day plans for two (or more 😬) different kids.
That said, it's often simpler to create a new schedule instead.
Active schedules
You can set a date - either once or repeating on certain days of the week - when the app will follow your schedule live, show your current event, and optionally send notifications and live activities. See active schedules for more.
Create new section at top
Although it's easiest to create a new section a the bottom of the schedule, you can also create one at the top using the schedule's main button and choosing
New section at top.