A decade is a period of 10 years. The word "decade" originates from the Greek word "dekas," which means a group of 10. The word "decade" began to be used in English to mean a period of 10 years in 1590. More »

The Dust Bowl lasted about a decade, beginning in 1930 and lasting until 1940. The lack of grasses and waves of drought during those years resulted in the topsoil being blown away during strong winds, creating massive du... More »

Latex paints in unopened containers that are well sealed can last up to a decade and a half. On the other hand, latex paints that have been opened can stay without spoiling for two years. More »

Although astronomers and geologists use the word "eon" to mean 1 billion years, it is more commonly used to refer to any long, indefinite period of time. Like the words "age," "epoch" and "era," it does not refer to a se... More »

A calendar quarter is a period of three consecutive months, and there are four quarters per calendar year. The quarters of the calendar year are January, February, March (quarter 1); April, May, June (quarter 2); July, A... More »

The evening is generally understood to encompass the hours from before sunset to just after nightfall or bedtime, a period of time that ranges from roughly 4 p.m. to 10 p.m. In general, the term "evening" is used to desc... More »

A rolling year is a period of 12 months that begins and ends on a set day. Rolling years are sometimes used by government agencies and corporations. More »