text: You do not have your history correct.  True we may have taken over several dates.  We however never claimed to have originated the original holidays.   Resurrection Day should be celebrated more in line with the Jewish Passover as it is a fulfillment of that holiday.  Some Christians will also admit that December 25th is probably not the correct day to celebrate his birthday, but we do not know for certain when his birthday was.  I will also admit that date was probably chosen to usurp another holiday.