Introduction
Umm al-Qura calendar (astronomical rules)
Umm al-Qura calendar date converter
Umm al-Qura calendar (1420 AH to 1434 AH)
Principal Islamic days of observance (1420 AH to 1450 AH)
Adjustment of the Umm al-Qura calendar
The Islamic Solar Calendars of Saudi Arabia
Literature & web links

N.B. These web pages are best viewed on a screen of 1280 × 1024 pixels or larger
Department of Mathematics
© R.H. van Gent (September 2017)

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