He is good at piloting a triplane.

He wrote a caption for the picture.

Octans is one of the constellations in the southern hemisphere.

My grandmother's forty-ninth day is next week.

He is using an octant for navigation.

This document contains important information.

This page of the book contains a lot of marginal notes.

He was reading a book in his room all day.

We celebrate our wedding anniversary on the twenty-fifth day of the month.

The rechargeable battery has run out, so I'm going to buy a new one.