No, if you set a certain date as a reference date. Then every date can have a constant value in regards to the reference date that doesn't change +x RD or -y RD. BC or AD refer to the reference date of Christ's birth. Others use the from universe creation epoch of the bible. No problem, as long as we have a reference.



Edited 3 time(s). Last edit at 09/07/2008 05:44PM by Ogygos.