0 ▁March ▁( in clus ive ). ▁ ▁Ord inary ▁Time ▁is ▁then ▁interrupted ▁by ▁L ent ▁and ▁E aster t ide ▁and ▁res umes ▁on ▁the ▁Monday ▁after ▁the ▁So lem n ity ▁of ▁Pent ec ost , ▁the ▁ 5 0 th ▁day ▁of ▁E aster t ide ▁( 1 0 ▁May ▁to ▁ 1 3 ▁June ). ▁It ▁con cludes ▁on ▁the ▁Saturday ▁afternoon ▁before ▁the ▁first ▁Sunday ▁of ▁ ▁Advent ▁( 2 7 ▁November ▁to ▁ 3 ▁December ). ▁The ▁second ▁period ▁of ▁Ord inary ▁Time ▁can ▁thus ▁sometimes ▁last ▁as ▁much ▁as ▁seven ▁months . ▁ ▁The ▁decision ▁to ▁treat ▁the ▁whole ▁of ▁Ord inary ▁Time ▁as ▁a ▁unit , ▁calling ▁it ▁in ▁Latin ▁Temp us ▁per ▁an num ▁( which ▁literally ▁means ▁" the ▁through - the - year ▁season "), ▁led ▁to ▁abandon ment ▁of ▁the ▁previous ▁termin ology , ▁where by ▁the ▁Sund ays ▁of ▁the ▁first ▁period ▁were ▁called ▁Sund ays ▁after ▁E pi ph any ▁and ▁those ▁of ▁the ▁second ▁period ▁Sund ays ▁after ▁Pent ec ost . ▁The ▁weeks , ▁rather ▁than ▁the ▁Sund ays ▁alone , ▁are ▁spoken ▁of , ▁in ▁view ▁of ▁the ▁assigning ▁of ▁specific ▁Script ure ▁read ings ▁at ▁Mass ▁not ▁only ▁to ▁the ▁Sund ays ▁of ▁Ord inary ▁Time ▁but ▁also ▁to ▁the ▁week days . ▁ ▁T aken ▁thus ▁as ▁a ▁unit , ▁Ord inary ▁Time ▁is ▁the ▁longest ▁season ▁of ▁the ▁lit urg ical ▁year , ▁and ▁is ▁composed ▁of ▁ 3 3 ▁or ▁