1968, not 63, and we are already beyond the 40 year generation, since the "secret rapture" needs to happen seven years prior to the end date of the generation.
We should already be well into the "great tribulation". The revived Roman Empire should be up and functioning. Millions of Jews should be lying dead in the cities of Israel. The antichrist should be sitting on a throne on Jerusalem and the one-world goverment should be in place.
All this makes perfect sense if you are into pure speculation. But in reality we are no closer to any of these things from a sensory standpoint than we were in 1998, or 1968, or 1948. It all remains a mystery to the literalists and carnal interpreters of the Word of God.
Peter said, when he noticed scoffers who were impatient and unbelieving toward the Lord's Return, that "God is not willing that any should perish, but that all should come to repentance."
Since God controls time, and time does not control God, then He is free to do as He wishes to bring everything together.
I understand that millions are coming to Christ in the 3rd world nations. Don't let the scoffers dismay you.