Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 1 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/01/2018   18:29:31   (  -0.02, -75.19) (  -0.16, -75.78)   67.29                80
 01/02/2018   18:08:07   (  -0.01, -75.20) (   0.90, -71.26)  450.05                80
 01/04/2018   06:32:33   (   0.01, -75.19) (   0.33, -76.51)  151.59                80
 01/05/2018   06:11:08   (   0.00, -75.20) (  -0.73, -71.99)  366.09                80
 01/06/2018   18:35:44   (  -0.00, -75.25) (  -0.46, -77.29)  233.04                80
 01/07/2018   18:14:18   (   0.00, -75.26) (   0.54, -72.75)  285.31                80
 01/09/2018   06:38:46   (  -0.00, -75.27) (   0.63, -78.02)  314.50                80
 01/10/2018   06:17:21   (  -0.00, -75.29) (  -0.43, -73.50)  204.23                80
 01/11/2018   18:41:56   (  -0.00, -75.34) (  -0.75, -78.80)  393.54                80
 01/12/2018   18:20:31   (  -0.00, -75.37) (   0.25, -74.27)  125.61                80
 01/14/2018   06:44:58   (   0.01, -75.38) (   0.92, -79.54)  473.01                80