Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 6 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)
 06/21/2019   06:38:46   (  -0.01, -75.19) (   0.64, -78.01)  321.59                80
 06/22/2019   06:17:22   (   0.00, -75.19) (  -0.36, -73.48)  195.12                80
 06/23/2019   18:39:19   (  -0.01, -75.20) (  -0.79, -78.79)  408.60                80
 06/24/2019   18:23:15   (  -0.02, -75.20) (   0.21, -74.26)  108.44                80
 06/26/2019   06:45:03   (   0.02, -75.21) (   0.97, -79.53)  491.17                80
 06/27/2019   06:23:38   (   0.02, -75.22) (  -0.03, -74.99)   25.94                80
 06/29/2019   18:26:51   (  -0.01, -75.24) (  -0.12, -75.77)   60.21                80
 06/30/2019   18:10:47   (  -0.00, -75.25) (   0.88, -71.24)  456.99                80
 07/02/2019   06:32:35   (  -0.01, -75.27) (   0.29, -76.51)  142.28                80
 07/03/2019   06:11:12   (  -0.00, -75.27) (  -0.77, -71.99)  375.15                80
 07/04/2019   18:33:08   (   0.00, -75.29) (  -0.44, -77.29)  227.69                80