SPX vs George Bayer's Rule #44 - Mercury Halfway Retrograde

MERCURY HALFWAY RETROGRADE PLACE  
... The rule here concerns only the retrograde movement and centers specifically on the halfway point from the moment Mercury turns retrograde to the place where it moves again direct. We figure the difference of these two places in the Zodiac, divide by two and look in the ephemeris (Raphael’s) for the date when this halfway point is reached ...

[George Bayer (1940): Stock and Commodity Traders´ Hand-Book of Trend Determination. Carmel, California; p. 43]

Calculated and charted with Sergey Tarassov's Timing Solution

2012-07-27 20:48 (Fri) = MER @ halfway (R)
2012-11-17 06:27 (Sat) = MER @ halfway (R)
2013-03-05 02:12 (Tue) = MER @ halfway (R)
2013-07-08 23:50 (Mon) = MER @ halfway (R)
2013-11-01 08:45 (Fri) = MER @ halfway (R)
2014-02-16 06:13 (Sun) = MER @ halfway (R)