Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 5 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2019   18:26:31   (   0.00, -75.19) (  -0.09, -75.73)   60.50                80
 05/13/2019   18:10:27   (   0.00, -75.20) (   0.90, -71.19)  456.16                80
 05/15/2019   06:32:15   (  -0.00, -75.20) (   0.30, -76.46)  143.78                80
 05/16/2019   06:10:52   (  -0.00, -75.21) (  -0.75, -71.94)  373.20                80
 05/17/2019   18:32:48   (  -0.00, -75.22) (  -0.48, -77.24)  230.05                80
 05/18/2019   18:16:45   (  -0.00, -75.24) (   0.57, -72.72)  287.41                80
 05/20/2019   06:38:33   (   0.01, -75.25) (   0.63, -77.98)  311.28                80
 05/21/2019   06:17:09   (   0.01, -75.27) (  -0.43, -73.46)  206.38                80
 05/22/2019   18:39:06   (  -0.01, -75.29) (  -0.80, -78.76)  396.04                80
 05/23/2019   18:23:01   (  -0.01, -75.30) (   0.20, -74.23)  122.08                80