A written record of events

Arrange in order of time of occurrence:

An instrument that registers or graphically records time intervals, such as the duration of an event.

To occur at the same time; be simultaneous.

A person or thing that belongs or seems to belong to another time.

An exceptionally precise timepiece.

An endeavour to readjust the body clock to enable a person to wake up earlier by going to sleep later and later every day until the required waking hour is achieved.

The chronology of the Earth's history as determined by geologic events.