Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2019   18:26:11   (   0.01, -75.21) (  -0.08, -75.66)   51.12                80
 04/11/2019   18:10:05   (   0.01, -75.21) (   0.93, -71.12)  465.84                80
 04/13/2019   06:31:52   (  -0.01, -75.21) (   0.25, -76.38)  133.81                80
 04/14/2019   06:10:26   (  -0.01, -75.21) (  -0.76, -71.85)  383.44                80
 04/15/2019   18:32:22   (   0.00, -75.23) (  -0.43, -77.15)  219.06                80
 04/16/2019   18:16:16   (   0.00, -75.24) (   0.58, -72.61)  298.72                80
 04/18/2019   06:38:02   (  -0.00, -75.25) (   0.60, -77.87)  299.52                80
 04/19/2019   06:16:37   (  -0.01, -75.26) (  -0.41, -73.34)  218.54                80
 04/20/2019   18:38:32   (   0.01, -75.28) (  -0.77, -78.64)  383.03                80
 04/21/2019   18:22:28   (   0.02, -75.30) (   0.31, -74.12)  135.43                80
 04/23/2019   06:44:14   (  -0.02, -75.33) (   0.88, -79.38)  461.81                80