Most strictly, a piece in binary form is characterized by two complementary, related sections of roughly equal duration, which come up frequently.

This day is celebrated when day and night are of equal duration.

He gave the women kisses of equal duration, although Sissy got a bit more tongue.

The academic year is divided into three terms of equal duration:

The new calendar, which was called the Rumi also began by 622, but with an annual duration equal to a solar year after 1840.

An alternative way of referring to the past is to use a scale with intervals of equal duration.

Zero coupon bonds have a duration equal to the bond's time to maturity, which makes them sensitive to any changes in the interest rates.

The concentration process is cyclical with each cycle having two halves of equal duration.

When the sun crosses the earth's equator, day and night are of equal duration worldwide.

A simple moving average can be considered to be a sequence of temporal means over periods of equal duration.