Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 08/31/2023   10:50:22   (  -0.03,-137.00) (   0.95,-141.25)  484.26                80
 09/01/2023   10:28:59   (  -0.03,-137.01) (  -0.10,-136.73)   32.05                80
 09/03/2023   22:32:11   (   0.03,-137.00) (  -0.07,-137.51)   57.54                80
 09/04/2023   22:16:07   (   0.03,-137.00) (   0.93,-132.98)  458.29                80
 09/06/2023   10:37:55   (  -0.03,-137.00) (   0.26,-138.25)  143.10                80
 09/07/2023   10:16:31   (  -0.04,-136.99) (  -0.74,-133.72)  372.20                80
 09/08/2023   22:38:28   (   0.04,-136.97) (  -0.42,-139.03)  234.95                80
 09/09/2023   22:22:24   (   0.05,-136.96) (   0.58,-134.50)  280.09                80
 09/11/2023   10:44:12   (  -0.05,-136.95) (   0.59,-139.77)  322.13                80
 09/12/2023   10:25:27   (  -0.05,-136.94) (  -0.41,-135.24)  192.75                80