Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2019   18:26:46   (   0.00, -75.19) (  -0.11, -75.76)   64.42                80
 06/14/2019   18:10:42   (   0.00, -75.20) (   0.90, -71.23)  451.94                80
 06/16/2019   06:32:30   (  -0.00, -75.20) (   0.29, -76.50)  148.33                80
 06/17/2019   06:11:05   (  -0.01, -75.20) (  -0.71, -71.97)  368.15                80
 06/18/2019   18:33:03   (   0.01, -75.20) (  -0.45, -77.28)  236.13                80
 06/19/2019   18:16:58   (   0.01, -75.21) (   0.55, -72.74)  280.81                80
 06/21/2019   06:38:46   (  -0.01, -75.23) (   0.63, -78.01)  318.23                80
 06/22/2019   06:17:23   (  -0.01, -75.24) (  -0.43, -73.49)  199.11                80
 06/23/2019   18:39:19   (   0.01, -75.25) (  -0.78, -78.79)  403.93                80
 06/24/2019   18:23:15   (   0.01, -75.26) (   0.22, -74.26)  114.06                80
 06/26/2019   06:45:03   (  -0.01, -75.29) (   0.96, -79.53)  483.41                80