Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/22/2021   06:44:28   (  -0.02, -75.21) (   0.93, -79.48)  486.90                80
 01/23/2021   06:23:03   (   0.02, -75.20) (  -0.03, -74.94)   30.14                80
 01/25/2021   18:26:15   (  -0.01, -75.20) (  -0.14, -75.71)   58.52                80
 01/26/2021   18:10:10   (  -0.01, -75.20) (   0.88, -71.18)  457.99                80
 01/28/2021   06:31:58   (   0.01, -75.21) (   0.27, -76.46)  142.15                80
 01/29/2021   06:10:34   (   0.00, -75.21) (  -0.75, -71.93)  374.43                80
 01/30/2021   18:32:30   (  -0.00, -75.22) (  -0.43, -77.24)  229.67                80
 01/31/2021   18:16:25   (  -0.00, -75.22) (   0.54, -72.70)  287.58                80
 02/02/2021   06:38:13   (   0.00, -75.24) (   0.62, -77.97)  311.07                80
 02/03/2021   06:16:49   (   0.00, -75.25) (  -0.41, -73.44)  206.22                80