When Mercury is visible after sunset, it is near its greatest eastern elongation; when visible before sunrise, near its greatest western elongation. Most of the time these extremes coincide with short-term changes in market-trend. The last one was the December 4 low in stocks (EOD close- Mercury elongation calculator HERE).
MER MAX Elongation East = 10/26/2012 04:48 PM @ 24.1° MER MAX Elongation West = 12/04/2012 06:11 PM @ 20.6° MER MAX Elongation East = 02/16/2013 04:17 PM @ 18.1° MER MAX Elongation West = 03/31/2013 04:50 PM @ 27.8° MER MAX Elongation East = 06/12/2013 11:45 AM @ 24.3° MER MAX Elongation West = 07/30/2013 03:48 AM @ 19.6° MER MAX Elongation West = 08/16/2012 07:04 AM @ 18.7°
