Kalender

noun
  1. An archaic or alternative spelling of the word 'calendar', which refers to a system for organizing days for social, religious, commercial, or administrative purposes. noun
    The kalender was marked with important dates and events.
    She consulted the kalender to check the date of the upcoming festival.
  2. A term used in some historical contexts to refer to a type of almanac or book containing a calendar and other useful information. noun
    The old kalender contained not only dates but also astronomical data.
    Merchants often relied on a kalender to plan their trading activities.