Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 9 22.  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)
 09/23/2018   06:17:18   (   0.26,-135.51) (   0.96,-132.25)  370.11                80
 09/24/2018   18:33:31   (  -0.28,-135.60) (  -0.03,-136.83)  139.80                80
 09/25/2018   18:15:32   (  -0.27,-135.62) (  -1.13,-131.84)  431.42                80
 09/27/2018   06:31:52   (   0.29,-135.57) (   0.09,-136.43)   98.41                80
 09/28/2018   06:13:52   (   0.27,-135.57) (   1.19,-131.43)  471.79                80
 09/29/2018   18:30:05   (  -0.29,-135.65) (  -0.20,-136.00)   40.05                80
 10/02/2018   06:28:26   (   0.29,-135.59) (   0.27,-135.60)    2.26                80
 10/04/2018   18:29:18   (  -0.30,-135.65) (  -0.37,-135.16)   54.42                80
 10/06/2018   06:48:19   (   0.31,-135.59) (  -0.65,-139.76)  475.73                80