iCal's Christian religious holidays is missing information
I'm working in iCal and want it to automatically include Christian religious holidays. I've downloaded the Christain religious holidays from Apple, but it does not include some very important ones (like Ash Wednesday, Easter, etc.). It also has some incorrect (Reformation Day is on October 28, instead of October 31). Is there anything that I should try doing differently?
MacBook Pro, Mac OS X (10.6.8)