ThedateofEasterPriortoA.D.325,Easterwasvariouslycelebratedondifferentdaysoftheweek,includingFriday,Saturday,andSunday.Inthatyear,theCouncilofNicaeawasconvenedbyemperorConstantine.ItissuedtheEasterRulewhichstatesthatEastershallbecelebratedonthefirstSundaythatoccursafterthefirstfullmoononorafterthevernalequinox.However,acaveatmustbeintroducedhere.The"fullmoon"intheruleistheecclesiasticalfullmoon,whichisdefinedasthefourteenthdayofatabularlunation,whereday1correspondstotheecclesiasticalNewMoon.Itdoesnotalwaysoccuronthesamedateastheastronomicalfullmoon.Theecclesiastical"vernalequinox"isalwaysonMarch21.Therefore,EastermustbecelebratedonaSundaybetweenthedatesofMarch22andApril25.TheEasterEggAswiththeEasterBunnyandtheholidayitself,theEasterEggpredatestheChristianholidayofEaster.TheexchangeofeggsinthespringtimeisacustomthatwascenturiesoldwhenEasterwasfirstcelebratedbyChristians.TheEasterBunnyTheEasterBunnyisnotamoderninvention.ThesymboloriginatedwiththepaganfestivalofEastre.Thegoddess,Eastre,wasworshippedbytheAnglo-Saxonsthroughherearthlysymbol,therabbit.