JeanV,
Here is one statement by CTR that might be of interest. He wrote the following in the Watch Tower of December 1, 1912, page 377, “The Ending of the Gentile Times”.
Coming now to a very critical examination of the date 536 B.C., there is an open question: Shall we call it 536 full years to A.D., or 535 full years? The difference in time between October 1st and January 1st would be the fourth of a year; hence our query is respecting 536-1/4 or 535-1/4 years B.C. What is the proper method of calculation, is in dispute. If we count the first year B.C. as 0, then the date 536-1/4 B.C. is the proper one for the end of the seventy years of captivity. But if we begin to reckon it by counting the first year before the Christian era as B.C. 1, then evidently the desolation ended 535-1/4 years B.C.
As to the methods of counting, Encyclopaedia Britannica says, “Astronomers denote the year which preceded the first of our era as 0 and the year previous to that as B.C. 1--the previous year B.C. 2, and so on.”
Whichever of these ways we undertake to calculate the matter the difference between the results is one year. The seventy years of Jewish captivity ended October, 536 B.C., and if there were 536-1/4 years B.C., then to complete the 2,520 years’ cycle of the Times of the Gentiles would require 1913-3/4 years of A.D., or to October, 1914. But if the other way of reckoning were used, then there were but 535-1/4 years of the period B.C., and the remainder of the 2,520 years would reach to A.D., 1914-3/4 years, otherwise October, 1915.
Since this question is agitating the minds of a considerable number of the friends, we have presented it here in some detail. We remind the readers, however, that nothing in the Scriptures says definitely that the trouble upon the Gentiles will be accomplished before the close of the Times of the Gentiles, whether that be October, 1914, or October, 1915.