Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 7 28.  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)
 07/30/2023   18:24:58   (   0.01, -75.21) (  -0.08, -75.66)   51.45                80
 07/31/2023   18:08:53   (   0.01, -75.21) (   0.95, -71.13)  465.62                80
 08/02/2023   06:30:38   (  -0.01, -75.22) (   0.28, -76.38)  133.62                80
 08/03/2023   06:09:13   (  -0.00, -75.22) (  -0.75, -71.85)  383.86                80
 08/04/2023   18:31:07   (   0.00, -75.23) (  -0.45, -77.15)  218.78                80
 08/05/2023   18:15:01   (   0.00, -75.25) (   0.59, -72.62)  299.32                80
 08/07/2023   06:36:48   (  -0.00, -75.27) (   0.58, -77.89)  298.26                80
 08/08/2023   06:15:22   (  -0.00, -75.28) (  -0.46, -73.36)  220.13                80
 08/09/2023   18:37:17   (  -0.00, -75.30) (  -0.73, -78.65)  381.38                80
 08/10/2023   18:21:10   (  -0.01, -75.32) (   0.25, -74.11)  137.34                80