A period during which something happens or is done.

A specific point or moment in the day or year.

To measure the duration of an event or activity.

A system of measuring the passing of days, hours, etc.

A measurement of how long something lasts.

A particular period in history.

A scheduled occasion for an event.

At a specific moment or occasion.

The concept of past, present, and future.

Relating to the measurement of time.