Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/20/2018   06:11:24   (   0.00, -75.21) (  -0.74, -71.94)  372.42                80
 10/21/2018   18:33:20   (  -0.00, -75.21) (  -0.43, -77.25)  232.35                80
 10/22/2018   18:17:15   (  -0.00, -75.21) (   0.55, -72.71)  284.68                80
 10/24/2018   06:39:02   (   0.00, -75.23) (   0.64, -77.98)  313.98                80
 10/25/2018   06:17:38   (  -0.00, -75.24) (  -0.40, -73.46)  203.21                80
 10/26/2018   18:39:34   (  -0.00, -75.25) (  -0.77, -78.77)  400.99                80
 10/27/2018   18:23:29   (  -0.00, -75.25) (   0.21, -74.23)  116.36                80
 10/29/2018   06:45:16   (   0.00, -75.28) (   0.98, -79.50)  481.90                80
 10/30/2018   06:23:51   (   0.01, -75.29) (  -0.06, -74.97)   35.55                80
 11/01/2018   18:27:02   (  -0.01, -75.31) (  -0.12, -75.75)   50.51                80
 11/02/2018   18:10:58   (  -0.01, -75.32) (   0.92, -71.22)  467.45                80