Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2018   06:10:45   (   0.01, -75.20) (  -0.72, -71.91)  374.86                80
 04/12/2018   18:32:43   (  -0.01, -75.23) (  -0.44, -77.22)  226.43                80
 04/13/2018   18:16:38   (  -0.01, -75.24) (   0.57, -72.69)  291.63                80
 04/15/2018   06:38:26   (   0.01, -75.26) (   0.59, -77.96)  306.94                80
 04/16/2018   06:17:02   (   0.01, -75.28) (  -0.41, -73.43)  211.09                80
 04/17/2018   18:38:58   (  -0.01, -75.31) (  -0.80, -78.73)  389.87                80
 04/18/2018   18:22:55   (  -0.01, -75.33) (   0.27, -74.21)  128.52                80
 04/20/2018   06:44:42   (   0.01, -75.35) (   0.95, -79.47)  469.46                80
 04/21/2018   06:23:19   (   0.01, -75.37) (  -0.11, -74.95)   48.87                80
 04/23/2018   18:26:30   (  -0.01, -75.43) (  -0.07, -75.72)   33.05                80
 04/24/2018   18:10:26   (  -0.01, -75.45) (   0.94, -71.19)  486.01                80