Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2016 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2016   06:26:42   (   0.10,-135.10) (   0.23,-134.66)   49.96                80
 12/22/2016   18:48:13   (  -0.09,-135.06) (   0.86,-139.21)  474.02                80
 12/23/2016   18:24:54   (  -0.10,-135.03) (  -0.28,-134.23)   91.67                80
 12/25/2016   06:46:35   (   0.08,-134.98) (  -0.76,-138.82)  437.22                80
 12/26/2016   06:23:15   (   0.09,-134.94) (   0.32,-133.82)  127.85                80
 12/27/2016   18:44:48   (  -0.08,-134.89) (   0.71,-138.38)  397.52                80
 12/28/2016   18:21:29   (  -0.08,-134.85) (  -0.44,-133.39)  167.41                80
 12/30/2016   06:43:08   (   0.07,-134.79) (  -0.66,-137.97)  362.51                80
 12/31/2016   06:19:50   (   0.07,-134.75) (   0.48,-132.98)  201.81                80
 01/01/2017   18:41:22   (  -0.06,-134.69) (   0.55,-137.54)  325.02                80
 01/02/2017   18:18:03   (  -0.06,-134.64) (  -0.54,-132.55)  239.21                80