Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2019   18:39:19   (   0.00, -75.20) (  -0.82, -78.78)  408.79                80
 06/24/2019   18:23:14   (  -0.01, -75.20) (   0.18, -74.25)  108.30                80
 06/26/2019   06:45:02   (   0.01, -75.21) (   1.00, -79.52)  491.64                80
 06/27/2019   06:23:39   (   0.01, -75.22) (  -0.06, -75.00)   25.57                80
 06/29/2019   18:26:52   (   0.01, -75.24) (  -0.09, -75.78)   60.62                80
 06/30/2019   18:10:47   (   0.01, -75.25) (   0.92, -71.25)  456.70                80
 07/02/2019   06:32:36   (  -0.01, -75.26) (   0.26, -76.52)  142.72                80
 07/03/2019   06:11:11   (  -0.01, -75.27) (  -0.75, -71.98)  374.69                80
 07/04/2019   18:33:07   (   0.01, -75.29) (  -0.46, -77.28)  227.90                80
 07/05/2019   18:17:03   (  -0.00, -75.30) (   0.55, -72.75)  290.01                80