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   06:45:13   (   0.01, -75.20) (   0.97, -79.44)  483.68                80
 09/12/2018   06:23:50   (   0.00, -75.21) (  -0.08, -74.92)   33.13                80
 09/14/2018   18:29:43   (  -0.00, -75.22) (  -0.10, -75.69)   53.28                80
 09/15/2018   18:08:18   (  -0.00, -75.23) (   0.90, -71.16)  463.98                80
 09/17/2018   06:32:48   (   0.00, -75.25) (   0.25, -76.44)  134.96                80
 09/18/2018   06:11:23   (   0.00, -75.26) (  -0.75, -71.90)  382.61                80
 09/19/2018   18:36:00   (  -0.00, -75.28) (  -0.41, -77.21)  219.72                80
 09/20/2018   18:14:36   (  -0.00, -75.29) (   0.58, -72.68)  298.22                80
 09/22/2018   06:39:04   (   0.01, -75.32) (   0.62, -77.94)  299.62                80
 09/23/2018   06:17:41   (   0.00, -75.34) (  -0.43, -73.42)  218.68                80
 09/24/2018   18:42:17   (  -0.01, -75.37) (  -0.78, -78.72)  382.47                80