Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 4 29.  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)
 04/30/2018   06:37:21   (   0.11,-135.48) (  -0.31,-137.27)  204.18                80
 05/01/2018   06:19:22   (   0.11,-135.49) (   0.82,-132.28)  365.55                80
 05/02/2018   18:35:32   (  -0.12,-135.50) (   0.21,-136.84)  152.81                80
 05/03/2018   18:17:33   (  -0.12,-135.50) (  -0.93,-131.85)  416.42                80
 05/05/2018   06:33:53   (   0.13,-135.49) (  -0.07,-136.45)  108.90                80
 05/06/2018   06:15:53   (   0.13,-135.49) (   1.01,-131.45)  460.04                80
 05/07/2018   18:34:44   (  -0.14,-135.50) (  -0.04,-136.02)   59.27                80
 05/10/2018   06:30:24   (   0.14,-135.47) (   0.12,-135.62)   16.97                80
 05/12/2018   18:31:13   (  -0.14,-135.46) (  -0.23,-135.19)   31.47                78