. ▁With ▁the ▁ad option ▁of ▁a ▁special ▁two - day ▁qual ifying ▁format ▁in ▁ 2 0 1 4 , ▁the ▁b ump ing ▁procedure ▁from ▁ 2 0 1 4 - 2 0 1 8 ▁actually ▁would ▁occur ▁on ▁the ▁first ▁day ▁( S aturday ) ▁of ▁time ▁tri als . ▁As ▁such , ▁the ▁term ▁" B ump ▁Day " ▁disappeared ▁from ▁use ▁for ▁a ▁few ▁years . ▁In ▁ 2 0 1 8 , ▁the ▁term ▁" B ump ▁Day " ▁was ▁brought ▁back , ▁and ▁was ▁used ▁as ▁the ▁nick name ▁for ▁the ▁first ▁day ▁of ▁time ▁tri als . ▁Begin ning ▁in ▁ 2 0 1 9 , ▁the ▁b ump ing ▁procedure ▁returns ▁to ▁the ▁second ▁day ▁of ▁time ▁tri als ▁( S und ay ). ▁Post - qual ifying ▁practice : ▁Begin ning ▁in ▁ 2 0 1 4 , ▁an ▁additional ▁practice ▁session ▁has ▁been ▁scheduled ▁on ▁the ▁Monday ▁after ▁qual ifying , ▁and ▁starting ▁in ▁ 2 0 1 9 , ▁after ▁P ole ▁Day ▁qual ifying , ▁primarily ▁for ▁the ▁cars ▁starting ▁ 1 0 - 3 0 ▁( which ▁do ▁not ▁particip ate ▁in ▁any ▁qual ifying ▁sessions ▁during ▁B ump ▁session ▁or ▁the ▁P ole ▁session ). ▁After ▁schedule ▁over ha uls , ▁as ▁well ▁as ▁a ▁substantial ▁format ▁changes ▁for ▁qual ifying , ▁this ▁session ▁is ▁util ized ▁specifically ▁for ▁race ▁practice , ▁particularly ▁multi - car ▁" group " ▁practice . ▁This ▁practice ▁session ▁has ▁proven ▁to ▁be