Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/10/2018   18:10:27   (   0.01, -75.20) (   0.90, -71.18)  458.16                80
 05/12/2018   06:32:16   (  -0.01, -75.19) (   0.27, -76.45)  142.81                80
 05/13/2018   06:10:51   (  -0.01, -75.19) (  -0.75, -71.92)  373.70                80
 05/14/2018   18:32:48   (   0.01, -75.20) (  -0.43, -77.22)  229.75                80
 05/15/2018   18:16:43   (   0.02, -75.21) (   0.58, -72.69)  286.99                80
 05/17/2018   06:38:31   (  -0.02, -75.21) (   0.58, -77.96)  313.48                80
 05/18/2018   06:17:07   (  -0.03, -75.21) (  -0.44, -73.43)  203.26                80
 05/19/2018   18:39:03   (   0.03, -75.22) (  -0.74, -78.74)  400.05                80
 05/20/2018   18:22:59   (   0.03, -75.23) (   0.28, -74.21)  117.24                80
 05/22/2018   06:44:46   (  -0.03, -75.24) (   0.94, -79.46)  482.03                80
 05/23/2018   06:23:22   (  -0.03, -75.25) (  -0.08, -74.93)   35.68                80