Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 10 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/09/2018   06:17:39   (   0.02, -75.00) (  -0.30, -73.41)  180.18                80
 10/10/2018   18:39:36   (  -0.03, -75.00) (  -0.87, -78.72)  425.12                80
 10/11/2018   18:23:31   (  -0.03, -75.00) (   0.15, -74.20)   91.21                80
 10/14/2018   06:23:54   (   0.03, -75.01) (   0.04, -74.94)    8.18                80
 10/16/2018   18:29:46   (  -0.03, -75.02) (  -0.20, -75.72)   80.21                80
 10/17/2018   18:08:21   (  -0.03, -75.03) (   0.82, -71.19)  436.81                80
 10/19/2018   06:32:50   (   0.03, -75.05) (   0.34, -76.47)  161.92                80
 10/20/2018   06:11:25   (   0.03, -75.06) (  -0.68, -71.94)  355.37                80
 10/21/2018   18:33:22   (  -0.04, -75.07) (  -0.51, -77.25)  248.06                80