Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2022 12 10.  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)
 12/11/2022   06:33:00   (  -0.01, -75.19) (   0.43, -77.16)  224.27                80
 12/12/2022   06:14:42   (  -0.00, -75.20) (  -0.70, -72.09)  354.21                80
 12/13/2022   18:30:35   (   0.01, -75.21) (  -0.31, -76.57)  155.61                80
 12/14/2022   18:12:17   (   0.01, -75.22) (   0.82, -71.50)  423.38                80
 12/16/2022   06:30:36   (  -0.01, -75.23) (   0.16, -75.93)   80.32                80
 12/17/2022   06:06:58   (  -0.01, -75.24) (  -0.99, -70.86)  499.06                80
 12/18/2022   18:25:32   (   0.01, -75.26) (  -0.01, -75.35)   10.05                80
 12/21/2022   06:22:52   (  -0.00, -75.29) (  -0.16, -74.71)   67.37                80
 12/22/2022   18:41:26   (   0.00, -75.31) (  -0.84, -79.20)  442.19                80
 12/23/2022   18:23:07   (  -0.01, -75.33) (   0.25, -74.12)  137.57                80