Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2018   06:44:42   (   0.01, -75.18) (   0.98, -79.46)  487.93                80
 04/21/2018   06:23:17   (   0.01, -75.18) (  -0.03, -74.93)   28.09                80
 04/23/2018   18:26:30   (  -0.01, -75.18) (  -0.11, -75.71)   60.49                80
 04/24/2018   18:10:26   (  -0.01, -75.18) (   0.91, -71.18)  456.34                80
 04/26/2018   06:32:13   (   0.01, -75.19) (   0.32, -76.44)  143.26                80
 04/27/2018   06:10:49   (   0.01, -75.20) (  -0.75, -71.92)  373.88                80
 04/28/2018   18:32:46   (   0.00, -75.21) (  -0.45, -77.22)  229.68                80
 04/29/2018   18:16:41   (   0.01, -75.22) (   0.57, -72.69)  287.85                80
 05/01/2018   06:38:29   (  -0.01, -75.24) (   0.60, -77.96)  310.46                80
 05/02/2018   06:17:05   (  -0.01, -75.25) (  -0.41, -73.43)  207.39                80