A decade is exactly 10 years long. This definition is widely accepted and used, whether referring to any consecutive 10-year period or a specific set of calendar years such as the 1960s or the 2020s.
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A decade is exactly 10 years long. This definition is widely accepted and used, whether referring to any consecutive 10-year period or a specific set of calendar years such as the 1960s or the 2020s.
