The day has come and gone. Another false prophet debunked. Another false prophecy. Harold Camping is a heretic and I also think that age may be a contributing factor. Please don't let anybody tell you when the day will be. If you follow them then you are a fool. Nobody knows but the Father.
Matthew 24:33-39 (Concordant Literal)
33 Thus you, also, whenever you may be perceiving all these things, know that He is near-at the doors.
34 "Verily, I am saying to you that by no means may this generation be passing by till all these things should be occurring.
35 Heaven and earth shall be passing by, yet My words may by no means be passing by.
36 Now, concerning that day and hour no one is aware, neither the messengers of the heavens, nor the Son; except the Father only.
37 "For even as the days of Noah, thus shall be the presence of the Son of Mankind.
38 For as they were in those days before the deluge, masticating and drinking and marrying and taking in marriage until the day on which Noah entered into the ark,
39 and did not know till the deluge came and takes them all away, thus shall be the presence of the Son of Mankind.
My guess is that he won't offer an apology, but who knows? I think that he will just mark another day on the calendar and thus another vicious circle until he gets tired of doing it or finally realizes the Truth or dies.