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  1. perpetual calendar

    • IPA[pərˌpeCH(əw)əl ˈkaləndər]


    • 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