Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2021   18:22:51   (   0.03, -75.25) (   0.27, -74.22)  118.53                80
 06/15/2021   06:42:00   (  -0.03, -75.26) (   0.90, -79.49)  482.05                80
 06/16/2021   06:25:55   (  -0.03, -75.27) (  -0.07, -74.96)   35.21                80
 06/18/2021   18:26:29   (   0.03, -75.30) (  -0.10, -75.73)   50.05                80
 06/19/2021   18:10:26   (   0.02, -75.32) (   0.93, -71.21)  467.68                80
 06/21/2021   06:29:35   (  -0.04, -75.33) (   0.24, -76.49)  131.93                80
 06/22/2021   06:13:32   (  -0.03, -75.35) (  -0.79, -71.96)  385.73                80
 06/23/2021   18:32:49   (   0.05, -75.37) (  -0.40, -77.27)  216.40                80
 06/24/2021   18:16:45   (   0.04, -75.39) (   0.64, -72.74)  301.50                80
 06/26/2021   06:35:55   (  -0.05, -75.41) (   0.54, -78.02)  297.46                80