In the history of Western music classical refers to the period from about 1750 to 1830.

Free time refers to the period when one is off.

Middle adulthood generally refers to the period between ages 40 to 60.

The term can also refer to the period of dominion.

Also, the "miracle" generally refers to the period between 1961 and 1996.

The 62 weeks refer only to the period during which the program aired, not the number of shows.

Sometimes refers to the period of driving between pit stops.

"These three years" refers to the period of his ministry on earth.

I have referred on several occasions to the period from 2002 to 2004 as a window of opportunity.

The history of Canada (1992-present) refers to the period immediately following the late 1980s, until present.