1906
Russell predicted a great war for 1906. As early as the
Zion's Watch Tower 1892 January 15 Russell had stated;
"Then "Woe to the man or nation who starts the next war in Europe; for it will be a war of extermination." if not brought to an end by the establishment of god's Kingdom in the hands f his elect and then glorified Church, it would exterminate the race - Matt. 24:22."
The European War was said to be fulfilment of prophecy. When the Russo-Japanese war began in 1904, Russell suggested in Zion's Watch Tower 1904 March 1 that it would suck in all Europe fulfilling his prophecy for 1906.
1910
1910 was another date for the 'rapture', with the Bible Students expecting to be taken to heaven.
Studies in the Scriptures Series 3 p.364 (versions printed before 1910) based this teaching on measurements from the Great Pyramid of Gizeh. It was also to Herald the time of Great trouble upon the Churches.
"It is but a few years before the full close of the time of trouble which ends the Gentile times; and when we remember the Lord's words-that the overcomers shall be accounted worthy to escape the severest of the trouble coming upon the world we may understand the reference to be to the anarchous trouble which will follow October, 1914; but a trouble chiefly upon the Church may be expected about 1910 A.D. The four years from 1910 to the end of 1914, indicated thus in the Great Pyramid, will doubtless be a time of "fiery trial" upon the Church (1 Cor. 3:15) preceding the anarchy of the world, which cannot last long- "Except those days should be shortened there should no flesh be saved." Matt. 24:22" Studies In the Scriptures Series III - Thy Kingdom Come p.364
1914
1914 has been a pivotal date for the Watchtower. The expectations prior to 1914 included it being the end of the Gentile Times, the end of Armageddon, the fall of false religion, the end of all governments, the resurrection, the start of Jesus 1000 year reign and paradise on earth. See
1914 for a in-depth article regarding this date.
1915
In 1912 Russell explained that he did not know how to account for the year 0 between B.C. and A.D. and that the end could be in either 1914 or 1915. The 2520 years of Daniels seven times prophecy extends from 606 to 1915 once the year zero between B.C. and A.D. is removed.
"Then, we were content to say, "606 B.C. seems a well authenticated date for the destruction of Jerusalem by Nebuchadnezzar, and B.C. 536 the date when the seventy years' appointed desolation of the land ceased." …
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. The trouble doubtless will be considerable before the final crash, even though that crash come suddenly, like the casting of a great millstone into the sea. (Rev. 18:21.) The parallel between the Jewish Harvest and the present Harvest would corroborate the thought that the trouble to the full will be accomplished by October, 1915." Watch Tower 1912 Dec 1 pp. 377-8
With the outbreak of World War One in August 1914, Russell reconfirmed that the end would be October 1914. When nothing happened in October 1914 Russell reused the idea that 1915 would signal the end.
"In view of this strong Bible evidence concerning the Times of the Gentiles, we consider it an established truth that the final end of the kingdoms of this world, and the full establishment of the Kingdom of God, will be accomplished near the end of A.D. 1915. ...
Be not surprised, then, when in subsequent chapters we present proofs that the setting up of the Kingdom of God is already begun, that it is pointed out in prophecy as due to begin the exercise of power in A.D. 1878, and that the "battle of the great day of God Almighty" (Rev. 16:14), which will end in A.D. 1915, with the complete overthrow of the earth's present rulership, is already commenced. ...
The "Gentile Times" prove that the present governments must all be overturned about the close of 1915 A.D." Studies In the Scriptures Series II - The Time Is At Hand 1915 ed. pp.99, 101, 242
1915 was to herald the end of worldly government and the reestablishment of Palestine.
"Be that as it may, there is evidence that the establishment of the Kingdom in Palestine will probably be in 1925, ten years later than we once calculated." Studies In the Scriptures Series VII - The Finished Mystery p.128
When nothing happened in 1915 the Watchtower went back to using 1914.
It was not until 1943 that the Watchtower Society explained once more that there is no year zero. However this time they did not use 1915 as Russell had done when acknowledging his mistake. The Watchtower decided to retain 1914, and was able to do so by changing the date for the destruction of Jerusalem from 606 B.C. to 607 B.C.
"Providentially, those Bible Students had not realized that there is no zero year between "B.C." and "A.D." Later, when research made it necessary to adjust B.C. 606 to 607 B.C.E., the zero year was also eliminated, so that the prediction held good at "A.D. 1914."-See "The Truth Shall Make You Free," published by the Watch Tower Society in 1943, page 239." Revelation - Its Grand Climax at Hand! p. 105
Since it was prior to 1914 that Russell and the Bible Students identified there was "no year zero," the above comment is dishonest. The year zero was not removed because research led to 607 B.C., but rather the elimination of the year zero led to moving from 606 B.C to 607 B.C.
The Society changed history with the stroke of a pen, however neither 607 B.C. nor 606 B.C. is correct. All historical evidence shows that Jerusalem fell in
587 B.C. an understanding that undermines the entire basis for 1914.