Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 8 30.  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)
 08/30/2023   20:25:15   (   0.01,-104.68) (  -0.22,-105.74)  120.78                80
 08/31/2023   20:09:10   (   0.01,-104.69) (   0.77,-101.21)  395.83                80
 09/02/2023   08:30:58   (  -0.00,-104.72) (   0.42,-106.48)  201.77                80
 09/03/2023   08:09:35   (   0.00,-104.72) (  -0.63,-101.96)  314.70                80
 09/04/2023   20:31:31   (  -0.00,-104.70) (  -0.59,-107.26)  292.78                80
 09/05/2023   20:15:28   (  -0.00,-104.70) (   0.46,-102.74)  223.81                80
 09/07/2023   08:37:16   (  -0.00,-104.74) (   0.72,-108.02)  373.61                80
 09/08/2023   08:15:52   (  -0.00,-104.74) (  -0.28,-103.49)  142.60                80
 09/09/2023   20:37:48   (   0.00,-104.71) (  -0.94,-108.79)  465.40                80
 09/10/2023   20:21:44   (   0.00,-104.71) (   0.13,-104.27)   51.38                80