The numbers are not so precise that you can use them in that way. Whether you draw upon visions or prophetic gifts , or the bible alone, you can't get the right year except by guesswork.
Harold Camping looks to be a heretic, see
http://en.wikipedia.org/wiki/Harold_Camping
So I don't think he is the right teacher.
Camping has already got it wrong with his 1994 date:
In 1992, Camping published a book titled
1994?, in which he proclaimed that Christ's return might be on September 6, 1994.
Examples of how Camping's teachings vary from past conventional doctrines are:
- Departing from Calvinist doctrine, Camping teaches relative free will of humanity, and that humans are not totally depraved. However, he subscribes to the idea that salvation is unmerited, cannot be achieved by good works or prayer, and is a pure act of God's grace.
- Departing from the doctrine of eternal torment for the unsaved in a place called Hell, Camping teaches annihilationism; that life will end and existence will cease for the unsaved soul.[9]
- Departing from doctrines stating no one can know the time of Christ's second coming, he teaches that the exact times of the Rapture and the End of the World are to be revealed sometime towards the end of time: (Daniel 12:9-13) prophecy.
Recommend getting your ideas about eschatology from a range of different people with real qualifications and sound doctrine.