Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2018   18:22:57   (   0.00, -75.20) (   0.21, -74.17)  116.94                80
 06/07/2018   06:44:45   (  -0.01, -75.21) (   0.94, -79.45)  482.88                80
 06/08/2018   06:23:21   (  -0.01, -75.21) (  -0.09, -74.92)   34.29                80
 06/10/2018   18:26:32   (   0.01, -75.24) (  -0.12, -75.68)   51.16                80
 06/11/2018   18:10:27   (   0.01, -75.25) (   0.91, -71.15)  466.40                80
 06/13/2018   06:32:16   (  -0.02, -75.26) (   0.23, -76.43)  132.73                80
 06/14/2018   06:10:51   (  -0.02, -75.27) (  -0.80, -71.90)  384.68                80
 06/15/2018   18:32:46   (   0.03, -75.28) (  -0.43, -77.19)  217.90                80
 06/16/2018   18:16:42   (   0.03, -75.29) (   0.60, -72.66)  300.01                80
 06/18/2018   06:38:30   (  -0.03, -75.32) (   0.54, -77.94)  298.01                80