Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/26/2018   06:32:13   (   0.00, -75.19) (   0.31, -76.44)  143.45                80
 04/27/2018   06:10:49   (   0.00, -75.19) (  -0.76, -71.92)  373.63                80
 04/28/2018   18:32:46   (  -0.00, -75.20) (  -0.44, -77.22)  229.90                80
 04/29/2018   18:16:41   (  -0.00, -75.21) (   0.58, -72.69)  287.73                80
 05/01/2018   06:38:30   (   0.00, -75.24) (   0.59, -77.96)  310.23                80
 05/02/2018   06:17:05   (  -0.00, -75.25) (  -0.42, -73.43)  207.47                80
 05/03/2018   18:39:01   (   0.00, -75.27) (  -0.77, -78.74)  395.41                80
 05/04/2018   18:22:57   (   0.01, -75.28) (   0.24, -74.20)  122.67                80
 05/06/2018   06:44:45   (  -0.01, -75.32) (   0.93, -79.48)  474.27                80
 05/07/2018   06:23:21   (  -0.02, -75.33) (  -0.09, -74.95)   43.98                80