James Ussher
James Ussher (1581-1656), the Primate of All Ireland in the mid seventeenth century, is best known for his treatise on chronology, in which, through painstaking correlation of history and biblical evidence, he determined that the first day of creation was Sunday, October 23rd, 4004 B.C..
He also established that Adam and Eve were expelled from Eden on a Monday, the 10th of November.
This work, full title: Annals of the Old Testament, deduced from the first origins of the world, was considered authoritative, and the dates that Ussher determined for biblical events were listed in the King James Bible until fairly recently.