Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/20/2018   18:17:16   (   0.02, -75.19) (   0.57, -72.67)  286.72                80
 09/22/2018   06:39:05   (  -0.01, -75.20) (   0.57, -77.95)  312.45                80
 09/23/2018   06:17:40   (  -0.01, -75.21) (  -0.42, -73.42)  204.39                80
 09/24/2018   18:39:37   (   0.01, -75.20) (  -0.79, -78.71)  400.19                80
 09/25/2018   18:23:33   (   0.00, -75.21) (   0.26, -74.19)  117.00                80
 09/27/2018   06:45:22   (  -0.00, -75.23) (   0.94, -79.46)  481.27                80
 09/28/2018   06:23:57   (   0.00, -75.24) (  -0.06, -74.92)   36.06                80
 09/30/2018   18:27:10   (  -0.01, -75.25) (  -0.09, -75.70)   50.55                80
 10/01/2018   18:11:05   (  -0.01, -75.26) (   0.91, -71.17)  466.88                80
 10/03/2018   06:30:14   (   0.01, -75.29) (   0.29, -76.43)  131.16                80