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  1. Oxford American Dictionary

    perpetual calendar

    • IPA[pərˌpeCH(əw)əl ˈkaləndər]

    美式

    • n.
      a calendar that can be adjusted to show any combination of day, month, and year, and is therefore usable year after year.；a set of tables from which the day of the week can be reckoned for any date.

    • noun: perpetual calendar, plural noun: perpetual calendars