Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2018   06:44:43   (  -0.00, -75.20) (   0.94, -79.42)  481.17                80
 06/24/2018   06:23:19   (  -0.01, -75.21) (  -0.09, -74.89)   36.34                80
 06/26/2018   18:26:31   (   0.01, -75.23) (  -0.05, -75.67)   49.07                80
 06/27/2018   18:10:25   (   0.02, -75.24) (   0.92, -71.12)  468.97                80
 06/29/2018   06:32:13   (  -0.02, -75.27) (   0.20, -76.40)  128.44                80
 06/30/2018   06:10:48   (  -0.02, -75.29) (  -0.77, -71.86)  389.82                80
 07/01/2018   18:32:44   (   0.03, -75.31) (  -0.41, -77.16)  212.15                80
 07/02/2018   18:16:40   (   0.03, -75.33) (   0.62, -72.64)  306.60                80
 07/04/2018   06:38:27   (  -0.03, -75.37) (   0.56, -77.90)  289.50                80
 07/05/2018   06:17:03   (  -0.03, -75.39) (  -0.48, -73.37)  229.52                80
 07/06/2018   18:38:59   (   0.04, -75.42) (  -0.70, -78.68)  371.56                80