'Day' in the Bible

according as also ye did acknowledge us in part, that your glory we are, even as also ye are ours, in the day of the Lord Jesus;

but their minds were hardened, for unto this day the same vail at the reading of the Old Covenant doth remain unwithdrawn -- which in Christ is being made useless --

wherefore, we faint not, but if also our outward man doth decay, yet the inward is renewed day by day;

for He saith, 'In an acceptable time I did hear thee, and in a day of salvation I did help thee, lo, now is a well-accepted time; lo, now, a day of salvation,' --

thrice was I beaten with rods, once was I stoned, thrice was I shipwrecked, a night and a day in the deep I have passed;