Rutherford publically rebuked Woodworth over the calendar:
"Shortly after coming to Bethel we were shocked to witness the spectacle of our brethren receiving what is designated as a 'trimming' from you. The first, if memory serves me correct, was a tongue lashing given to C. J. Woodworth. Woodworth in a personal letter to you stated something to the effect that it would be serving the devil to continue using our present calendar. For that he was humiliated, called a jackass, and given a public lambasting" (Moyle v. Fred W. Franz, et al., pp. 1732-1733).
Woodworth's math also does not appear to have been accurate. On p. 380 of the 13 March 1935 issue of the Golden Age, he writes that "in the autumn of 4129 B.C. the new moon rose at, Jerusalem time, 8:23: 27.504592 a.m., Sunday, September 22." According to Skyview Cafe, moonrise occurred on - 4128-09-22 (the year is not -4129 because 1 BC is counted as year 0) in time zone UT +2 in Jerusalem, ISR at 02:13 am, not at 8:23 am, and this fell on a Wednesday in the Gregorian calendar. More to the point, the new moon itself rose on Friday, September 25, at 06:32 a.m. So Woodworth's calculations ended up being three days out of whack with the actual passage of time. Three days out of six thousand years however is not too bad.