Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2018   18:33:20   (   0.00, -75.19) (  -0.43, -77.25)  233.77                80
 10/22/2018   18:17:15   (   0.00, -75.19) (   0.54, -72.71)  282.56                80
 10/24/2018   06:39:02   (  -0.00, -75.20) (   0.64, -77.98)  317.05                80
 10/25/2018   06:17:38   (  -0.00, -75.21) (  -0.39, -73.46)  199.46                80
 10/26/2018   18:39:34   (   0.00, -75.20) (  -0.78, -78.77)  406.02                80
 10/27/2018   18:23:29   (   0.00, -75.20) (   0.20, -74.23)  110.57                80
 10/29/2018   06:42:37   (  -0.01, -75.21) (   0.92, -79.51)  488.87                80
 10/30/2018   06:23:51   (  -0.02, -75.22) (  -0.06, -74.97)   27.63                80
 11/01/2018   18:29:43   (   0.03, -75.22) (  -0.07, -75.76)   60.76                80
 11/02/2018   18:09:52   (   0.03, -75.23) (   0.91, -71.22)  456.48                14