Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2018   06:38:25   (   0.01, -75.22) (   0.65, -77.95)  311.14                80
 04/16/2018   06:17:02   (   0.01, -75.23) (  -0.42, -73.43)  206.15                80
 04/17/2018   18:38:58   (  -0.01, -75.25) (  -0.80, -78.73)  396.14                80
 04/18/2018   18:22:55   (   0.01, -75.26) (   0.27, -74.21)  121.10                80
 04/20/2018   06:44:42   (  -0.01, -75.28) (   0.96, -79.47)  478.04                80
 04/21/2018   06:23:18   (  -0.00, -75.29) (  -0.05, -74.94)   39.72                80
 04/23/2018   18:26:30   (   0.00, -75.33) (  -0.08, -75.72)   44.31                80
 04/24/2018   18:10:26   (  -0.00, -75.35) (   0.93, -71.19)  474.04                80
 04/26/2018   06:32:14   (  -0.00, -75.37) (   0.25, -76.46)  123.77                80
 04/27/2018   06:10:50   (  -0.00, -75.39) (  -0.76, -71.93)  394.84                80