Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2020 12 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)
 12/13/2020   18:32:23   (  -0.00, -75.15) (  -0.46, -77.17)  229.61                80
 12/14/2020   18:16:19   (  -0.00, -75.16) (   0.55, -72.64)  287.00                80
 12/16/2020   06:38:07   (  -0.01, -75.16) (   0.62, -77.91)  313.99                80
 12/17/2020   06:16:43   (  -0.01, -75.16) (  -0.39, -73.38)  202.80                80
 12/18/2020   18:38:40   (   0.01, -75.19) (  -0.78, -78.69)  399.87                80
 12/19/2020   18:22:36   (   0.02, -75.20) (   0.23, -74.16)  117.73                80
 12/21/2020   06:44:24   (  -0.02, -75.22) (   0.93, -79.44)  481.23                80
 12/22/2020   06:22:59   (  -0.02, -75.23) (  -0.08, -74.91)   36.75                80
 12/24/2020   18:26:12   (   0.02, -75.29) (  -0.08, -75.69)   46.20                80
 12/25/2020   18:10:08   (   0.03, -75.31) (   0.93, -71.16)  472.35                80