Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2018   06:45:14   (  -0.00, -75.20) (   0.97, -79.44)  483.65                80
 09/12/2018   06:23:50   (  -0.00, -75.21) (  -0.08, -74.92)   33.38                80
 09/14/2018   18:27:03   (   0.00, -75.23) (  -0.09, -75.69)   52.42                80
 09/15/2018   18:10:58   (   0.01, -75.24) (   0.90, -71.16)  465.00                80
 09/17/2018   06:32:48   (  -0.01, -75.26) (   0.24, -76.44)  133.99                80
 09/18/2018   06:11:23   (  -0.01, -75.27) (  -0.75, -71.90)  383.72                80
 09/19/2018   18:36:01   (   0.01, -75.30) (  -0.41, -77.21)  218.20                80
 09/20/2018   18:14:36   (   0.01, -75.31) (   0.59, -72.68)  299.94                80
 09/22/2018   06:39:05   (  -0.01, -75.34) (   0.56, -77.96)  297.85                80
 09/23/2018   06:17:41   (  -0.01, -75.36) (  -0.43, -73.42)  220.67                80