Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 13.  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)
 12/14/2023   06:18:51   (  -0.00, -75.21) (  -0.39, -73.60)  183.84                80
 12/15/2023   18:38:07   (   0.01, -75.22) (  -0.81, -78.90)  419.43                80
 12/16/2023   18:22:03   (   0.00, -75.22) (   0.20, -74.37)   97.51                80
 12/19/2023   06:22:27   (  -0.01, -75.23) (  -0.04, -75.11)   14.36                80
 12/21/2023   18:25:39   (   0.01, -75.27) (  -0.13, -75.88)   69.67                80
 12/22/2023   18:09:34   (   0.00, -75.28) (   0.88, -71.35)  448.37                80
 12/24/2023   06:31:22   (   0.00, -75.30) (   0.28, -76.62)  150.47                80
 12/25/2023   06:09:58   (   0.01, -75.31) (  -0.74, -72.09)  367.65                80
 12/26/2023   18:31:54   (  -0.01, -75.34) (  -0.44, -77.40)  233.33                80
 12/27/2023   18:15:50   (  -0.01, -75.36) (   0.58, -72.87)  285.21                80