Both Jews and Muslims have a ritual calendar which is lunar, not solar. This is why Passover, Hanukkah, etc. move around in the calendar and the same can be said about the Muslim celebrations such as Ramadan. I’ve been in Jerusalem when it was celebrated in May, but this year its being celebrated now. And it coincides this year with the celebrations leading up to Yom Kippur. Here is an interesting article from today’s N.Y. Times about the juxaposition of these celebrations.

http://www.nytimes.com/2008/09/29/world/middleeast/29ramadan.html?th&emc=th

See what you think.