• Day and Night – The Arduin day is exactly 25 hours long, consisting of 10 full hours each of daylight and darkness, with two and a half hours each of twilight and dawn.  There is no axial tilt or rotational wobble, so this never varies during the year regardless of the season.
  • Days of the Week – There are 6 days in the Arduin week.  They are Mordag, Taenwal, Wurdigan, Veldoar, Sarmaht, and Qwain in that order.  The people of Arduin commonly work Mordag through Veldoar and only a half day on Sarmaht, taking the afternoon of that day and all day Qwain off.  There are 5 weeks in an Arduin month.
  • The Months – There are 15 months in the Arduin year, for a total of 450 days.  This does not including Tai Taowyn, or Endyear, which is a 3 day period of “non-time” that takes care of the odd orbital period around the sun of 453 days; thus leaving the Arduinian calendars all neat and even.  The months, in order, are Tor, Ator, Vaen, Torvaen, Kos, Torkos, Skord, Torskord, Zar, Torzar, Ghast, Torghast, Chund, Torchund, and, of course, Khoros, or the Endyear month.
  • The Seasons – There are 4 distinct seasons in Arduin: Summer, Fall, Winter, and Spring.  Winter is 125 days long, and is the last 25 days of the old year and the first 100 days of the new.  Spring follows with 125 days, and is in turn followed by 125 days of Summer.  Fall follows as the first 75 of the last 100 days of the year (the first 25 days of Winter being the last 25 days of the year).