▁to ▁the ▁track ▁imp ass ible . ▁A ▁few ▁days ▁before ▁the ▁race ▁was ▁to ▁be ▁held , ▁officials ▁decided ▁to ▁post p one ▁the ▁race ▁until ▁Monday ▁May ▁ 3 1 ▁in ▁order ▁to ▁allow ▁time ▁for ▁the ▁grounds ▁to ▁dry ▁out . ▁In ▁ 1 9 1 9 , ▁the ▁race ▁was ▁held ▁Saturday ▁May ▁ 3 1 . ▁It ▁was ▁first ▁race ▁after ▁the ▁conclusion ▁of ▁World ▁War ▁I . ▁The ▁race ▁was ▁deliber ately ▁moved ▁off ▁Memorial ▁Day ▁( F rid ay ▁May ▁ 3 0 ) ▁and ▁pushed ▁to ▁Saturday ▁so ▁as ▁not ▁to ▁det ract ▁from ▁the ▁hol iday . ▁May ▁ 3 0 ▁fell ▁on ▁Sunday ▁in ▁ 1 9 2 0 , ▁ 1 9 2 6 , ▁ 1 9 3 7 , ▁ 1 9 4 8 , ▁ 1 9 5 4 , ▁and ▁ 1 9 6 5 . ▁In ▁each ▁of ▁those ▁years , ▁the ▁race ▁was ▁held ▁on ▁Monday ▁May ▁ 3 1 . ▁The ▁final ▁race ▁under ▁that ▁sched uling ▁format ▁( 1 9 7 0 ) ▁was ▁on ▁Saturday ▁May ▁ 3 0 . ▁In ▁ 1 9 7 1 ▁and ▁ 1 9 7 2 , ▁the ▁race ▁was ▁held ▁on ▁the ▁Saturday ▁of ▁Memorial ▁Day ▁week end . ▁ ▁In ▁ 1 9 7 3 , ▁the ▁race ▁was ▁scheduled ▁for ▁Memorial ▁Day ▁Monday . ▁The ▁change ▁was ▁made ▁after ▁requests ▁from ▁spect ators , ▁many ▁compla ining ▁that ▁it ▁was ▁incon ven ient ▁to