Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 5 15.  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)
 05/15/2023   20:32:12   (  -0.00,-104.72) (  -0.55,-107.30)  292.70                80
 05/16/2023   20:16:07   (  -0.00,-104.73) (   0.45,-102.77)  223.91                80
 05/18/2023   08:37:56   (   0.00,-104.73) (   0.72,-108.04)  376.62                80
 05/19/2023   08:16:31   (   0.00,-104.73) (  -0.29,-103.51)  139.60                80
 05/20/2023   20:38:27   (  -0.00,-104.73) (  -0.93,-108.81)  465.45                80
 05/21/2023   20:22:23   (   0.00,-104.73) (   0.07,-104.28)   51.02                80
 05/24/2023   08:25:27   (  -0.01,-104.74) (   0.07,-105.03)   33.21                80
 05/25/2023   08:04:02   (  -0.01,-104.74) (  -0.94,-100.50)  483.06                80
 05/26/2023   20:26:00   (   0.02,-104.74) (  -0.21,-105.82)  121.87                80
 05/27/2023   20:09:55   (   0.02,-104.75) (   0.81,-101.29)  394.93                80