Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2018 5 8.  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)
 05/10/2018   06:30:23   (   0.14,-135.45) (   0.07,-135.61)   19.58                80
 05/12/2018   18:28:34   (  -0.14,-135.44) (  -0.18,-135.18)   29.60                80
 05/14/2018   06:47:34   (   0.14,-135.39) (  -0.81,-139.78)  499.45                80
 05/15/2018   06:29:34   (   0.14,-135.38) (   0.27,-134.78)   67.90                80
 05/16/2018   18:48:24   (  -0.15,-135.37) (   0.77,-139.34)  452.48                80
 05/17/2018   18:25:04   (  -0.15,-135.35) (  -0.37,-134.35)  114.08                80
 05/19/2018   06:44:04   (   0.15,-135.29) (  -0.66,-138.94)  416.69                80
 05/20/2018   06:26:04   (   0.16,-135.26) (   0.48,-133.96)  149.62                80
 05/21/2018   18:44:55   (  -0.16,-135.25) (   0.57,-138.51)  371.93                80
 05/22/2018   18:21:34   (  -0.17,-135.22) (  -0.52,-133.51)  194.08                80