Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 27.  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)
 12/27/2023   18:15:48   (   0.02, -75.21) (   0.52, -72.85)  268.57                80
 12/29/2023   06:37:36   (  -0.02, -75.21) (   0.62, -78.12)  331.94                80
 12/30/2023   06:16:10   (  -0.02, -75.21) (  -0.36, -73.58)  185.06                80
 12/31/2023   18:38:07   (   0.02, -75.22) (  -0.80, -78.89)  417.92                80
 01/01/2024   18:22:02   (   0.02, -75.23) (   0.24, -74.36)   99.79                80
 01/03/2024   06:43:50   (  -0.02, -75.25) (   0.95, -79.63)  498.77                80
 01/04/2024   06:22:24   (  -0.02, -75.26) (  -0.04, -75.09)   19.25                80
 01/06/2024   18:25:35   (   0.01, -75.29) (  -0.12, -75.86)   64.53                80
 01/07/2024   18:09:29   (   0.00, -75.30) (   0.87, -71.32)  453.87                80
 01/09/2024   06:31:17   (   0.00, -75.33) (   0.30, -76.58)  143.71                80