full moon Length: 1 day Period: 1 year More Information Wikipedia:Easter Easter Dating Method How do they figure out the Day of Easter? Easter ( Old English : Ēostre ) or Pascha ( Greek : Πάσχα , Paskha ; Aramaic : פֶּסחא ‎ Pasḥa ; from Hebrew : פֶּסַח ‎ Pesaḥ )