Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-A
TLE Epoch: 2018 9 20.  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)
 09/21/2018   18:34:09   (  -0.27,-135.55) (   0.57,-139.34)  431.20                80
 09/22/2018   18:16:08   (  -0.25,-135.57) (  -0.54,-134.34)  140.57                80
 09/24/2018   06:32:25   (   0.28,-135.53) (  -0.45,-138.95)  388.82                80
 09/25/2018   06:14:22   (   0.26,-135.54) (   0.60,-133.94)  182.09                80
 09/26/2018   18:30:32   (  -0.28,-135.63) (   0.38,-138.51)  329.19                80
 09/27/2018   18:12:30   (  -0.27,-135.64) (  -0.73,-133.51)  241.85                80
 09/29/2018   06:28:48   (   0.29,-135.59) (  -0.26,-138.12)  288.14                80
 09/30/2018   06:10:45   (   0.27,-135.59) (   0.79,-133.11)  281.77                80
 10/01/2018   18:26:55   (  -0.29,-135.65) (   0.13,-137.69)  231.75                80
 10/02/2018   18:08:53   (  -0.27,-135.65) (  -0.92,-132.68)  338.15                80
 10/04/2018   06:27:50   (   0.29,-135.59) (  -0.07,-137.29)  192.72                80