Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2015 12 22.  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)
 12/24/2015   06:39:00   (   0.09,-134.89) (  -0.43,-137.20)  263.39                80
 12/25/2015   06:15:42   (   0.10,-134.85) (   0.71,-132.22)  300.91                80
 12/26/2015   18:34:34   (  -0.08,-134.82) (   0.34,-136.77)  221.45                80
 12/27/2015   18:16:34   (  -0.09,-134.78) (  -0.74,-131.77)  343.17                80
 12/29/2015   06:35:35   (   0.07,-134.68) (  -0.29,-136.36)  190.54                80
 12/30/2015   06:12:15   (   0.08,-134.64) (   0.79,-131.36)  373.45                80
 12/31/2015   18:31:07   (  -0.06,-134.60) (   0.25,-135.91)  149.91                80
 01/01/2016   18:13:09   (  -0.07,-134.56) (  -0.89,-130.92)  414.31                80
 01/03/2016   06:32:08   (   0.06,-134.45) (  -0.20,-135.50)  119.75                80
 01/04/2016   06:08:50   (   0.07,-134.40) (   0.95,-130.51)  443.60                80