Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/22/2018   06:44:46   (  -0.00, -75.20) (   0.93, -79.47)  485.77                80
 05/23/2018   06:23:21   (  -0.00, -75.20) (  -0.04, -74.92)   30.66                80
 05/25/2018   18:26:33   (   0.00, -75.20) (  -0.12, -75.70)   57.19                80
 05/26/2018   18:10:28   (   0.01, -75.20) (   0.90, -71.17)  459.81                80
 05/28/2018   06:32:16   (  -0.01, -75.22) (   0.25, -76.44)  139.14                80
 05/29/2018   06:10:52   (  -0.01, -75.22) (  -0.77, -71.91)  378.02                80
 05/30/2018   18:32:48   (   0.02, -75.23) (  -0.40, -77.21)  225.50                80
 05/31/2018   18:16:44   (   0.02, -75.24) (   0.62, -72.68)  292.08                80
 06/02/2018   06:38:31   (  -0.03, -75.27) (   0.59, -77.95)  305.88                80
 06/03/2018   06:17:07   (  -0.03, -75.28) (  -0.43, -73.42)  212.00                80