'Day' in the Bible

I am thankful to God, whom I serve from progenitors in a pure conscience, that unceasingly I have remembrance concerning thee in my supplications night and day,

for which cause also these things I suffer, but I am not ashamed, for I have known in whom I have believed, and have been persuaded that he is able that which I have committed to him to guard -- to that day.

may the Lord give to him to find kindness from the Lord in that day; and how many things in Ephesus he did minister thou dost very well know.

henceforth there is laid up for me the crown of the righteousness that the Lord -- the Righteous Judge -- shall give to me in that day, and not only to me, but also to all those loving his manifestation.