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) (  -0.31, -73.42)  180.34                80
 10/10/2018   18:39:36   (  -0.03, -75.00) (  -0.86, -78.73)  424.86                80
 10/11/2018   18:23:31   (  -0.03, -75.00) (   0.17, -74.20)   91.59                80
 10/14/2018   06:23:54   (   0.03, -75.01) (  -0.01, -74.94)    8.51                80
 10/16/2018   18:27:05   (  -0.03, -75.02) (  -0.18, -75.72)   79.35                80
 10/17/2018   18:08:20   (  -0.03, -75.03) (   0.85, -71.19)  437.78                80
 10/19/2018   06:32:48   (   0.03, -75.05) (   0.35, -76.46)  160.76                80
 10/20/2018   06:11:23   (   0.03, -75.06) (  -0.68, -71.93)  356.66                80
 10/21/2018   18:33:19   (  -0.04, -75.07) (  -0.53, -77.23)  246.51                80