Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2018   06:32:12   (   0.01, -75.20) (   0.27, -76.39)  135.59                80
 06/30/2018   06:10:48   (   0.01, -75.20) (  -0.77, -71.86)  381.25                80
 07/01/2018   18:32:44   (  -0.01, -75.21) (  -0.42, -77.16)  222.18                80
 07/02/2018   18:16:39   (  -0.00, -75.21) (   0.56, -72.62)  295.17                80
 07/04/2018   06:38:26   (   0.00, -75.23) (   0.62, -77.89)  303.59                80
 07/05/2018   06:17:01   (   0.00, -75.23) (  -0.42, -73.36)  213.97                80
 07/06/2018   18:38:58   (  -0.00, -75.25) (  -0.76, -78.66)  388.60                80
 07/07/2018   18:22:53   (  -0.00, -75.26) (   0.27, -74.13)  129.36                80
 07/09/2018   06:44:41   (   0.00, -75.28) (   0.90, -79.40)  468.44                80
 07/10/2018   06:23:15   (   0.01, -75.29) (  -0.08, -74.86)   49.47                80
 07/12/2018   18:26:27   (  -0.01, -75.32) (  -0.06, -75.63)   34.89                80