Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2018   06:45:14   (   0.01, -75.20) (   0.97, -79.44)  484.07                80
 09/12/2018   06:23:50   (   0.01, -75.20) (  -0.08, -74.92)   32.29                80
 09/14/2018   18:29:43   (  -0.00, -75.20) (  -0.09, -75.69)   55.90                80
 09/15/2018   18:08:18   (  -0.00, -75.20) (   0.90, -71.16)  460.90                80
 09/17/2018   06:32:47   (   0.00, -75.21) (   0.30, -76.43)  138.54                80
 09/18/2018   06:11:23   (   0.00, -75.22) (  -0.76, -71.90)  378.51                80
 09/19/2018   18:36:00   (  -0.01, -75.23) (  -0.46, -77.20)  224.91                80
 09/20/2018   18:14:36   (  -0.01, -75.24) (   0.59, -72.68)  292.52                80
 09/22/2018   06:39:04   (   0.01, -75.26) (   0.61, -77.94)  305.81                80
 09/23/2018   06:17:40   (   0.01, -75.28) (  -0.38, -73.41)  211.97                80
 09/24/2018   18:42:17   (  -0.01, -75.30) (  -0.77, -78.72)  390.27                80