Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 1 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)
 01/13/2021   06:10:33   (  -0.00, -75.18) (  -0.73, -71.91)  371.87                80
 01/14/2021   18:32:29   (  -0.00, -75.19) (  -0.47, -77.21)  231.29                80
 01/15/2021   18:16:25   (  -0.01, -75.20) (   0.54, -72.69)  285.84                80
 01/17/2021   06:38:13   (   0.01, -75.20) (   0.61, -77.96)  314.03                80
 01/18/2021   06:16:48   (   0.01, -75.21) (  -0.41, -73.43)  203.38                80
 01/19/2021   18:38:45   (  -0.01, -75.24) (  -0.79, -78.74)  398.55                80
 01/20/2021   18:22:40   (  -0.01, -75.25) (   0.23, -74.21)  119.41                80
 01/22/2021   06:44:28   (   0.01, -75.27) (   0.98, -79.47)  479.05                80
 01/23/2021   06:23:03   (   0.01, -75.29) (  -0.04, -74.94)   39.02                80
 01/25/2021   18:26:15   (  -0.01, -75.33) (  -0.13, -75.72)   44.39                80
 01/26/2021   18:10:10   (  -0.01, -75.35) (   0.89, -71.19)  474.10                80