Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2018   18:27:03   (   0.02, -75.20) (  -0.09, -75.69)   56.41                80
 09/15/2018   18:10:58   (   0.02, -75.20) (   0.90, -71.16)  460.24                80
 09/17/2018   06:32:48   (  -0.02, -75.21) (   0.24, -76.44)  139.08                80
 09/18/2018   06:11:23   (  -0.02, -75.22) (  -0.76, -71.90)  377.91                80
 09/19/2018   18:36:01   (   0.02, -75.23) (  -0.40, -77.21)  225.85                80
 09/20/2018   18:17:16   (   0.02, -75.24) (   0.59, -72.68)  291.58                80
 09/22/2018   06:39:04   (  -0.01, -75.26) (   0.61, -77.94)  306.55                80
 09/23/2018   06:17:41   (  -0.01, -75.27) (  -0.45, -73.42)  211.30                80
 09/24/2018   18:42:17   (   0.01, -75.29) (  -0.77, -78.72)  391.25                80
 09/25/2018   18:20:53   (   0.00, -75.30) (   0.23, -74.19)  126.92                80
 09/27/2018   06:45:22   (  -0.00, -75.34) (   0.91, -79.47)  470.30                80