Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 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)
 06/15/2018   18:32:46   (   0.01, -75.21) (  -0.44, -77.18)  224.83                80
 06/16/2018   18:16:42   (   0.02, -75.22) (   0.59, -72.65)  292.55                80
 06/18/2018   06:38:29   (  -0.02, -75.24) (   0.60, -77.92)  306.24                80
 06/19/2018   06:17:05   (  -0.02, -75.25) (  -0.43, -73.39)  211.65                80
 06/20/2018   18:39:01   (   0.02, -75.27) (  -0.75, -78.69)  390.00                80
 06/21/2018   18:22:56   (   0.02, -75.29) (   0.28, -74.16)  128.45                80
 06/23/2018   06:44:44   (  -0.03, -75.32) (   0.91, -79.43)  468.73                80
 06/24/2018   06:23:19   (  -0.03, -75.34) (  -0.12, -74.90)   49.99                80
 06/26/2018   18:26:31   (   0.04, -75.40) (  -0.02, -75.67)   31.63                80
 06/27/2018   18:10:27   (   0.04, -75.42) (   1.01, -71.15)  487.54                80