Islamic calendar

(redirected from Arabic calendar)
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This night happens every 35 days when Kliwon, the last day of the five-day Javanese, or Pasaran, week coincides with the Friday, or Jumat, of the seven-day Western or Arabic calendar.
If Arabic calendars did inform Western ones, it was almost certainly through Spain that they did so, further complicating the arrangement and designation of days through a process which has yet to be fully explained.
4) Although the Western tradition of `Egyptian Days' was thus well established even before the medieval period, it may have been reinforced by certain Arabic calendars in which, from the ninth century, Islamic lexicographers and astronomers had assembled Bedouin and other ideas on such matters as the motion and influence of the stars, the mansions of the moon, and the predictability of the weather.