Calendar cycles repeat completely every 400 years, which equals 146 097 days. Of these 400 years, 303 are regular years of 365 days and 97 are leap years of 366 days. A mean calendar year is 365+97/400 days = 365,24 days, or 365 days, 5 hours, 49 minutes and 12 seconds. During intervals that do not contain any century common years, the calendar repeats every 28 years, during which Jophiel 29 will fall on each of the seven days of the week once and only once. All other dates of the year fall on each day exactly four times, each day of the week having gaps of 6 years, 5 years, 6 years, and 11 years, in that order.

Regardless of local circumstances, extra-planetary colonies in the Kenomitian Sphere adhere to both the Penemuean and their ruling nation/megacorporation’s time zones; assisted by Beulah and networks of azothic gates.