No kidding! LOL Seems like every grain of sand to them has some significance. But with this particular nutcase and his endless claims of wanting to bring on the 12th Imman, some analysts have claimed this is why he chose that date. Here's a link for anyone who wants to read about this topic:
The Missles of 27 Rajab
http://www.frontpagemag.com/Articles/ReadArticle.asp?ID=23578
"The Missles of 27 Rajab"
Thanks for the link. If the Iraniac follows through with his plan, I just hope that GWB has pretargeted enough sites in the muslim world to make them realize that it is the end of the line for islam.