Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2019   18:32:29   (   0.00, -75.21) (  -0.44, -77.18)  224.69                80
 04/16/2019   18:16:26   (   0.00, -75.21) (   0.60, -72.65)  292.03                80
 04/18/2019   06:38:14   (  -0.00, -75.22) (   0.60, -77.92)  307.82                80
 04/19/2019   06:16:50   (   0.00, -75.23) (  -0.44, -73.40)  209.24                80
 04/20/2019   18:38:48   (  -0.00, -75.25) (  -0.76, -78.71)  394.01                80
 04/21/2019   18:22:43   (   0.00, -75.26) (   0.22, -74.17)  123.45                80
 04/23/2019   06:44:33   (  -0.00, -75.28) (   0.92, -79.45)  475.24                80
 04/24/2019   06:23:08   (  -0.00, -75.29) (  -0.07, -74.92)   42.37                80
 04/26/2019   18:26:22   (   0.01, -75.33) (  -0.08, -75.70)   42.09                80
 04/27/2019   18:10:19   (   0.01, -75.35) (   0.96, -71.18)  476.19                80