Day/Related Articles

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A list of Citizendium articles, and planned articles, about Day.
See also changes related to Day, or pages that link to Day or to this page or whose text contains "Day".

Parent topics

  • Time [r]: A fundamental quantity in physics - that what differs always between two inspections of the same system by the same observer. [e]
  • Astronomy [r]: The study of objects and processes in the observable universe, e.g. stars, planets, comets or asteroids. [e]
  • Mathematics [r]: The study of quantities, structures, their relations, and changes thereof. [e]
  • Calendar [r]: A method used for keeping time on a scale of years. [e]
  • Calendrics [r]: The study of the algorithms for the generation of calendars. [e]


Other related topics

  • Second [r]: Please do not use this term in your topic list, because there is no single article for it. Please substitute a more precise term. See Second (disambiguation) for a list of available, more precise, topics. Please add a new usage if needed.
  • Minute [r]: Add brief definition or description
  • Hour [r]: Add brief definition or description
  • Week [r]: Time unit equal to a number of days, now usually seven calendar days, previously weeks of between 4 and 20 days have been used historically in various places. [e]
  • Month [r]: Unit of time originally corresponding approximately to one cycle of the moon's phases, or about 30 days or 4 weeks. [e]
  • Year [r]: A unit of time measurement that corresponds to one revolution of the earth around the sun, approximately 365¼ days. [e]
  • Light day [r]: Distance that light travels in a vacuum in one day; 1 light day = 25,902,068,371,200 m = 2.5902067 * 1013m. [e]