Easter – a pagan holiday?
n"Ostara or Oestara... also known as the Spring Equinox, Ostara falls on 21 March. Ostara is sacred to the Ancient Goddess Eostar or Astarte, whose symbols are the egg and hare and who give rise to the term Oestrus. She is probably the oldest Goddess of fertility and can be traced back over 4, 000 years. Ostara is the first sign of spring; it also is the Witches’ version of Easter. It is a time to celebrate that spring is here and that the land is alive." 

 - How to Get the Most Out of Your Year,
by Merlin EA, August 20th, 2006 (http://www.witchvox.com/va/dt_va.html?a=ukgb2&c=holidays&id=10898)