Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/19/2019   18:16:58   (   0.00, -75.20) (   0.56, -72.75)  279.53                80
 06/21/2019   06:38:47   (   0.00, -75.20) (   0.62, -78.01)  320.61                80
 06/22/2019   06:17:22   (   0.01, -75.20) (  -0.38, -73.48)  196.32                80
 06/23/2019   18:39:18   (  -0.01, -75.21) (  -0.84, -78.78)  407.14                80
 06/24/2019   18:23:15   (  -0.02, -75.22) (   0.23, -74.26)  110.32                80
 06/26/2019   06:45:03   (   0.02, -75.24) (   0.96, -79.53)  488.60                80
 06/27/2019   06:23:39   (   0.02, -75.25) (  -0.05, -75.00)   28.94                80
 06/29/2019   18:26:52   (  -0.01, -75.28) (  -0.10, -75.78)   56.39                80
 06/30/2019   18:10:47   (  -0.01, -75.29) (   0.90, -71.24)  461.37                80
 07/02/2019   06:32:35   (   0.00, -75.31) (   0.28, -76.51)  137.09                80