Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2018   06:38:31   (   0.00, -75.20) (   0.62, -77.95)  313.80                80
 05/18/2018   06:17:06   (  -0.00, -75.20) (  -0.39, -73.42)  202.82                80
 05/19/2018   18:39:02   (   0.00, -75.21) (  -0.79, -78.72)  400.95                80
 05/20/2018   18:22:58   (   0.01, -75.21) (   0.23, -74.19)  116.09                80
 05/22/2018   06:44:46   (  -0.01, -75.22) (   0.93, -79.47)  483.04                80
 05/23/2018   06:23:22   (  -0.01, -75.23) (  -0.09, -74.94)   34.49                80
 05/25/2018   18:26:34   (   0.01, -75.27) (  -0.06, -75.71)   49.98                80
 05/26/2018   18:10:29   (   0.01, -75.28) (   0.96, -71.18)  468.29                80
 05/28/2018   06:32:16   (  -0.02, -75.31) (   0.26, -76.44)  129.27                80
 05/29/2018   06:10:52   (  -0.02, -75.33) (  -0.76, -71.91)  389.10                80