Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 4 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)
 04/20/2019   18:38:47   (  -0.00, -75.20) (  -0.79, -78.70)  398.85                80
 04/21/2019   18:22:43   (  -0.00, -75.20) (   0.20, -74.16)  117.75                80
 04/23/2019   06:44:32   (   0.00, -75.21) (   0.93, -79.45)  482.89                80
 04/24/2019   06:23:08   (   0.00, -75.21) (  -0.06, -74.91)   33.80                80
 04/26/2019   18:26:20   (   0.00, -75.23) (  -0.12, -75.69)   52.32                80
 04/27/2019   18:10:17   (   0.00, -75.25) (   0.93, -71.17)  465.16                80
 04/29/2019   06:32:05   (  -0.00, -75.26) (   0.25, -76.44)  133.86                80
 04/30/2019   06:10:41   (  -0.00, -75.28) (  -0.75, -71.91)  383.86                80
 05/01/2019   18:32:38   (   0.00, -75.30) (  -0.41, -77.22)  217.91                80
 05/02/2019   18:16:34   (   0.00, -75.32) (   0.60, -72.69)  300.34                80