Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 08/31/2023   20:09:10   (  -0.01,-104.69) (   0.75,-101.21)  396.33                80
 09/02/2023   08:30:59   (   0.01,-104.72) (   0.38,-106.49)  201.58                80
 09/03/2023   08:09:35   (   0.01,-104.72) (  -0.62,-101.96)  314.74                80
 09/04/2023   20:31:31   (  -0.01,-104.70) (  -0.61,-107.26)  292.51                80
 09/05/2023   20:15:27   (  -0.02,-104.70) (   0.44,-102.74)  224.11                80
 09/07/2023   08:37:16   (   0.02,-104.73) (   0.74,-108.01)  373.23                80
 09/08/2023   08:15:51   (   0.02,-104.73) (  -0.26,-103.48)  143.07                80
 09/09/2023   20:37:48   (  -0.03,-104.71) (  -0.96,-108.78)  464.64                80
 09/10/2023   20:21:43   (  -0.03,-104.71) (   0.05,-104.25)   52.10                80
 09/13/2023   08:24:48   (   0.04,-104.76) (   0.06,-105.01)   28.09                80