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<p>[QUOTE=&quot;dougsmit, post: 1248687, member: 19463&quot;]<a href="http://www.muslimphilosophy.com/ip/hijri.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.muslimphilosophy.com/ip/hijri.htm" rel="nofollow">http://www.muslimphilosophy.com/ip/hijri.htm</a></p><p><br /></p><p>The above link converts AH to AD (2011 AD is 1432 AH).&nbsp; Unfortunately the Islamic calendar conversion is not just subtracting a number because their year differs slightly (11-12 days) since it is based on the moon rather than the sun.&nbsp; That means that seasons move with the difference so any given day occurs in all seasons at one time or another in a cycle of about 33 years.&nbsp; </p><p>&nbsp;</p><p>In general we should not expect a Muslim nation to issue coins dated in a system based on the birth of Christ and detailed by a Pope in the middle ages.&nbsp;&nbsp; Those who study old coins need to become aware if not familiar with many calendar systems.&nbsp; Perhaps you have noticed that many ancient coins are dated with a year span even when the coin is year dated in their system.&nbsp; The idea of a year of 365 1/4 days was only slowly adopted by various nations so we are well into the 20th century before even Christian nations all agreed on the date.&nbsp; My favorite was when Alaska was sold to the US they not only had to change the date but they had to repeat a Friday (the original &#039;Eight Days a Week&#039;) since they were moved to the other side of the International Date Line in addition to adopting the US calendar.&nbsp; </p><p><br /></p><p>What I&#039;d like someone to explain to me is why this coin has dates in European Arabic numerals reading 1361 at the bottom but at the top is the date in Arabic-Indic numerals reading 1360.&nbsp; Note the denominations are 0 (=5) and 1. (=10).[/QUOTE]</p><p><br /></p>

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