The link is to Skeeter Davis' signature song on the subject, however, the occasion is Harold Camping's prediction that it will be all over this Sunday.
When I was young, the big guy in end-of-the-world stuff was Hal Lindsey, a former Campus Crusade staffer who has written extensively on the End Times. In his most famous book, The Late Great Planet Earth, he said that the famous "This generation shall not pass away until all is fulfilled" (Mt: 24:34) referred not to the time of Christ at all, but rather to the time when the Jews return to Israel. Hence the clock started ticking in 1948. One generation is forty years, he said, therefore it should all be over by about 1988. Since seven of those years are the Tribulation period, the Rapture should have happened in about 1981. However, Lindsey took the passage about no one knowing the day or the hour (Mt: 24:36) seriously enough to not make the kind of exact predictions that Camping has made. (Camping had one in 1994, but since we're still here, he's at least 0 for 1). Lindsey held, instead, that no man knows the day or the hour, but a study of Bible prophecy should permit us to hit the bullseye on the generation.
My good friend Joe Sheffer, when I was an undergraduate, pointed to a copy of the Late Great Planet Earth and said "That guy's going to look like such a fool." Then he commenced to tear Lindsey's contentions to shreds. But Lindsey is a fool that still has a loyal following, and a Bible prophecy TV show.