Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2018   06:32:16   (  -0.01, -75.22) (   0.26, -76.45)  139.53                80
 05/13/2018   06:10:51   (  -0.01, -75.23) (  -0.76, -71.92)  377.94                80
 05/14/2018   18:32:48   (   0.01, -75.26) (  -0.42, -77.22)  223.91                80
 05/15/2018   18:16:43   (   0.01, -75.27) (   0.60, -72.69)  293.84                80
 05/17/2018   06:38:32   (  -0.00, -75.28) (   0.57, -77.96)  305.12                80
 05/18/2018   06:17:06   (  -0.00, -75.29) (  -0.39, -73.42)  212.62                80
 05/19/2018   18:39:02   (  -0.00, -75.32) (  -0.79, -78.72)  389.07                80
 05/20/2018   18:22:58   (  -0.00, -75.33) (   0.23, -74.19)  129.16                80
 05/22/2018   06:44:46   (   0.01, -75.36) (   0.93, -79.47)  468.60                80
 05/23/2018   06:23:22   (   0.01, -75.38) (  -0.09, -74.94)   49.93                80