Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/22/2018   18:26:21   (  -0.01, -75.20) (  -0.09, -75.69)   55.02                80
 03/23/2018   18:10:17   (  -0.01, -75.21) (   0.91, -71.15)  461.99                80
 03/25/2018   06:32:05   (   0.01, -75.21) (   0.26, -76.43)  138.22                80
 03/26/2018   06:10:40   (   0.01, -75.22) (  -0.74, -71.90)  378.79                80
 03/27/2018   18:32:38   (  -0.01, -75.24) (  -0.43, -77.20)  223.57                80
 03/28/2018   18:16:33   (  -0.01, -75.25) (   0.57, -72.67)  294.12                80
 03/30/2018   06:38:22   (   0.02, -75.27) (   0.60, -77.95)  304.37                80
 03/31/2018   06:16:57   (   0.01, -75.29) (  -0.41, -73.41)  213.58                80
 04/01/2018   18:38:54   (  -0.02, -75.32) (  -0.76, -78.72)  387.57                80
 04/02/2018   18:22:50   (  -0.01, -75.34) (   0.24, -74.19)  131.00                80
 04/04/2018   06:44:38   (   0.01, -75.37) (   0.92, -79.46)  466.01                80