Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/18/2018   06:17:06   (  -0.01, -75.20) (  -0.39, -73.42)  202.70                80
 05/19/2018   18:39:02   (  -0.00, -75.21) (  -0.79, -78.72)  400.68                80
 05/20/2018   18:22:58   (  -0.01, -75.21) (   0.23, -74.19)  116.63                80
 05/22/2018   06:44:45   (   0.01, -75.23) (   0.99, -79.45)  482.27                80
 05/23/2018   06:23:21   (   0.01, -75.24) (  -0.04, -74.92)   35.47                80
 05/25/2018   18:26:32   (  -0.01, -75.27) (  -0.12, -75.70)   48.85                80
 05/26/2018   18:10:28   (  -0.01, -75.29) (   0.91, -71.17)  469.45                80
 05/28/2018   06:32:16   (   0.00, -75.32) (   0.25, -76.44)  128.00                80
 05/29/2018   06:13:32   (   0.00, -75.34) (  -0.77, -71.91)  390.53                80
 05/30/2018   18:32:48   (   0.00, -75.36) (  -0.40, -77.22)  210.81                80