Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 9 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 09/24/2018   18:33:30   (  -0.28,-135.60) (   0.01,-136.82)  139.65                80
 09/25/2018   18:15:31   (  -0.27,-135.62) (  -1.09,-131.83)  431.59                80
 09/27/2018   06:31:52   (   0.29,-135.57) (   0.11,-136.43)   98.43                80
 09/28/2018   06:13:53   (   0.27,-135.57) (   1.21,-131.44)  471.81                80
 09/29/2018   18:30:05   (  -0.29,-135.65) (  -0.22,-136.00)   39.77                80
 10/02/2018   06:28:26   (   0.29,-135.60) (   0.29,-135.60)    0.54                80
 10/04/2018   18:29:19   (  -0.30,-135.65) (  -0.39,-135.17)   54.71                80
 10/06/2018   06:48:19   (   0.31,-135.59) (  -0.62,-139.76)  475.53                80
 10/07/2018   06:25:00   (   0.30,-135.58) (   0.48,-134.77)   93.07                80