▁area . ▁The ▁race ▁was ▁halt ed ▁after ▁ 1 5 ▁la ps , ▁and ▁could ▁not ▁be ▁restart ed . ▁Short ▁of ▁the ▁ 1 0 1 ▁la ps ▁needed ▁for ▁an ▁official ▁race , ▁track ▁officials ▁elected ▁to ▁res ume ▁the ▁race ▁on ▁the ▁following ▁day ▁( T ues day ▁May ▁ 2 7 ). ▁The ▁race ▁was ▁run ▁to ▁completion , ▁as ▁la ps ▁ 1 6 – 2 0 0 ▁were ▁completed ▁on ▁T ues day . ▁ ▁Ar med ▁Forces ▁Day ▁also ▁falls ▁during ▁the ▁month ▁of ▁May , ▁and ▁usually ▁coinc ides ▁with ▁one ▁of ▁the ▁week ends ▁of ▁time ▁tri als . ▁Since ▁ 1 9 7 8 ▁at ▁the ▁Speed way , ▁that ▁week end ▁is ▁often ▁filled ▁with ▁activities ▁hon oring ▁the ▁U . S . ▁military , ▁including ▁an ▁o ath ▁of ▁en list ment ▁ceremony . ▁ ▁Days ▁and ▁dates ▁ ▁Pract ice ▁and ▁qual ifying ▁▁ ▁Open ing ▁Day : ▁The ▁first ▁day ▁of ▁practice ▁is ▁tradition ally ▁referred ▁to ▁as ▁" Open ing ▁Day ." ▁From ▁ 1 9 1 1 ▁to ▁ 1 9 7 3 , ▁Open ing ▁day ▁was ▁tradition ally ▁May ▁ 1 , ▁although ▁oft ent imes ▁the ▁track ▁was ▁made ▁available ▁for ▁practice ▁much ▁earlier ▁than ▁that ▁date . ▁The ▁day ▁is ▁usually ▁marked ▁with ▁festiv ities ▁and ▁for ▁many ▁years ▁was ▁popular ly ▁attended . ▁In ▁some ▁years ▁when ▁May ▁ 1 ▁fell ▁mid - week , ▁or ▁if ▁weather ▁inter fer ed