Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 12 1.  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)
 12/03/2023   06:22:22   (   0.01, -75.21) (  -0.03, -75.10)   13.23                80
 12/05/2023   18:25:35   (  -0.00, -75.24) (  -0.13, -75.88)   72.05                80
 12/06/2023   18:09:30   (  -0.01, -75.25) (   0.87, -71.34)  445.67                80
 12/08/2023   06:31:19   (   0.00, -75.27) (   0.30, -76.61)  153.68                80
 12/09/2023   06:09:54   (   0.01, -75.28) (  -0.70, -72.08)  364.10                80
 12/10/2023   18:31:50   (  -0.01, -75.30) (  -0.49, -77.38)  237.48                80
 12/11/2023   18:15:46   (  -0.01, -75.32) (   0.53, -72.85)  280.61                80
 12/13/2023   06:37:34   (   0.01, -75.34) (   0.64, -78.13)  318.05                80
 12/14/2023   06:16:10   (   0.01, -75.35) (  -0.39, -73.60)  199.77                80
 12/15/2023   18:38:06   (  -0.00, -75.37) (  -0.78, -78.90)  401.92                80