No, I don't think there is. We should have a Hijri and Gregorian calendar which both highlight special dates of islamic celebrations and nights of remembrance.
I don't think any website has a Islamic calender on their forum, however, I'll try to inquire Vbulletin if it's possible to create a customizable calendar that is not based on the solar calendar.
Jazakumullah khoyron katsiro.
Yes, check it out there! And i saw: "Last Update: Wed., Feb. 23, 2005- Muharram 14 - 08:00 GMT"
But the year selection only upto "2002".
We need to see hijriyah date like as a landmark of islamic websites. Allahu a'lam wa bishshowab.