Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/08/2023   18:33:02   (   0.03, -75.20) (  -0.43, -77.23)  231.70                80
 01/09/2023   18:16:57   (   0.03, -75.21) (   0.60, -72.70)  285.36                80
 01/11/2023   06:38:44   (  -0.04, -75.22) (   0.58, -77.98)  314.53                80
 01/12/2023   06:17:20   (  -0.04, -75.23) (  -0.46, -73.45)  202.83                80
 01/13/2023   18:39:15   (   0.04, -75.25) (  -0.77, -78.75)  399.96                80
 01/14/2023   18:23:11   (   0.04, -75.26) (   0.27, -74.23)  117.91                80
 01/16/2023   06:44:58   (  -0.03, -75.28) (   0.90, -79.50)  480.61                80
 01/17/2023   06:23:33   (  -0.03, -75.29) (  -0.08, -74.96)   37.27                80
 01/19/2023   18:26:43   (   0.00, -75.33) (  -0.08, -75.74)   47.10                80
 01/20/2023   18:10:38   (  -0.01, -75.34) (   0.91, -71.21)  471.17                80