Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/14/2018   06:38:15   (   0.02, -75.20) (   0.60, -77.92)  308.84                80
 03/15/2018   06:16:51   (   0.01, -75.22) (  -0.40, -73.39)  208.65                80
 03/16/2018   18:38:48   (  -0.02, -75.26) (  -0.79, -78.69)  391.53                80
 03/17/2018   18:22:44   (  -0.02, -75.28) (   0.21, -74.16)  126.53                80
 03/19/2018   06:44:32   (   0.02, -75.29) (   0.96, -79.43)  473.08                80
 03/20/2018   06:23:08   (   0.01, -75.30) (  -0.10, -74.91)   44.95                80
 03/22/2018   18:26:21   (  -0.01, -75.37) (  -0.09, -75.69)   36.71                80
 03/23/2018   18:10:17   (  -0.01, -75.39) (   0.91, -71.16)  481.67                80
 03/25/2018   06:32:05   (   0.02, -75.40) (   0.26, -76.43)  117.32                80
 03/26/2018   06:10:42   (   0.02, -75.42) (  -0.80, -71.91)  401.06                80
 03/27/2018   18:32:38   (  -0.02, -75.47) (  -0.44, -77.21)  198.16                80