Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 12.  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)
 12/13/2023   06:34:55   (  -0.01, -75.21) (   0.63, -78.13)  332.70                80
 12/14/2023   06:18:51   (  -0.00, -75.21) (  -0.38, -73.60)  183.82                80
 12/15/2023   18:38:07   (   0.00, -75.22) (  -0.83, -78.90)  419.54                80
 12/16/2023   18:22:03   (   0.00, -75.22) (   0.19, -74.37)   97.34                80
 12/19/2023   06:22:26   (  -0.01, -75.23) (  -0.03, -75.11)   14.09                80
 12/21/2023   18:25:38   (   0.01, -75.27) (  -0.15, -75.88)   70.15                80
 12/22/2023   18:09:34   (   0.00, -75.28) (   0.87, -71.35)  447.87                80
 12/24/2023   06:31:22   (   0.00, -75.29) (   0.30, -76.62)  151.04                80
 12/25/2023   06:09:58   (   0.01, -75.31) (  -0.72, -72.09)  367.02                80
 12/26/2023   18:31:54   (  -0.01, -75.34) (  -0.46, -77.39)  234.06                80