Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2022 12 8.  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)
 12/08/2022   18:35:38   (   0.01, -75.19) (  -0.60, -77.79)  296.70                80
 12/09/2022   18:17:20   (   0.00, -75.19) (   0.58, -72.73)  281.50                80
 12/11/2022   06:35:40   (  -0.00, -75.19) (   0.43, -77.16)  223.94                80
 12/12/2022   06:12:02   (   0.00, -75.20) (  -0.71, -72.09)  354.58                80
 12/13/2022   18:30:35   (   0.00, -75.21) (  -0.30, -76.57)  155.37                80
 12/14/2022   18:12:17   (   0.00, -75.22) (   0.82, -71.50)  423.63                80
 12/16/2022   06:30:36   (  -0.01, -75.23) (   0.16, -75.93)   79.73                80
 12/17/2022   06:06:58   (  -0.00, -75.24) (  -0.99, -70.86)  499.65                80
 12/18/2022   18:25:32   (   0.00, -75.27) (  -0.00, -75.35)    9.65                80
 12/21/2022   06:22:51   (   0.00, -75.30) (  -0.11, -74.70)   68.13                80