Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2020 12 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)
 12/18/2020   18:38:40   (   0.00, -75.16) (  -0.79, -78.69)  402.36                80
 12/19/2020   18:22:35   (   0.00, -75.17) (   0.22, -74.16)  114.70                80
 12/21/2020   06:44:24   (  -0.00, -75.18) (   0.94, -79.44)  484.89                80
 12/22/2020   06:22:59   (   0.00, -75.19) (  -0.07, -74.91)   32.49                80
 12/24/2020   18:26:12   (  -0.00, -75.23) (  -0.08, -75.69)   52.07                80
 12/25/2020   18:10:08   (   0.00, -75.24) (   0.93, -71.16)  465.93                80
 12/27/2020   06:31:55   (  -0.00, -75.27) (   0.28, -76.42)  132.52                80
 12/28/2020   06:10:31   (  -0.00, -75.28) (  -0.79, -71.91)  385.44                80
 12/29/2020   18:32:28   (   0.00, -75.31) (  -0.43, -77.21)  216.33                80
 12/30/2020   18:16:23   (   0.00, -75.33) (   0.59, -72.68)  301.98                80