Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2022 12 23.  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)
 12/24/2022   18:16:58   (   0.01, -75.20) (   0.60, -72.66)  289.67                80
 12/26/2022   06:36:05   (  -0.02, -75.20) (   0.61, -77.93)  311.72                80
 12/27/2022   06:20:01   (  -0.02, -75.20) (  -0.41, -73.40)  205.07                80
 12/28/2022   18:39:17   (   0.02, -75.22) (  -0.79, -78.71)  398.06                80
 12/29/2022   18:23:13   (   0.02, -75.23) (   0.23, -74.18)  119.45                80
 12/31/2022   06:45:01   (  -0.02, -75.25) (   0.91, -79.46)  479.97                80
 01/01/2023   06:26:16   (  -0.02, -75.26) (  -0.11, -74.94)   37.98                80
 01/03/2023   18:26:47   (   0.00, -75.31) (  -0.11, -75.71)   45.66                80
 01/04/2023   18:10:43   (  -0.00, -75.33) (   0.92, -71.18)  472.72                80
 01/06/2023   06:32:30   (   0.01, -75.35) (   0.28, -76.45)  125.54                80