Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 10 22.  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)
 10/22/2023   20:31:30   (   0.02,-104.66) (  -0.56,-107.29)  300.06                80
 10/23/2023   20:15:27   (   0.02,-104.66) (   0.47,-102.77)  215.22                80
 10/25/2023   08:37:18   (  -0.02,-104.68) (   0.71,-108.05)  383.91                80
 10/26/2023   08:15:54   (  -0.02,-104.68) (  -0.27,-103.52)  131.46                80
 10/27/2023   20:37:53   (   0.02,-104.65) (  -0.91,-108.84)  477.66                80
 10/28/2023   20:21:50   (   0.02,-104.65) (   0.07,-104.31)   38.01                80
 10/31/2023   08:24:57   (   0.01,-104.67) (   0.11,-105.06)   44.78                80
 11/01/2023   08:03:34   (   0.00,-104.67) (  -0.93,-100.55)  470.44                80
 11/02/2023   20:25:33   (  -0.00,-104.64) (  -0.28,-105.85)  138.89                80
 11/03/2023   20:09:29   (   0.00,-104.64) (   0.71,-101.32)  376.62                80