Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 10 8.  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)
 10/09/2023   08:37:12   (  -0.01,-104.71) (   0.75,-108.02)  377.73                80
 10/10/2023   08:15:48   (  -0.01,-104.71) (  -0.31,-103.50)  138.86                80
 10/11/2023   20:37:43   (   0.01,-104.69) (  -0.89,-108.80)  467.33                80
 10/12/2023   20:21:38   (   0.01,-104.69) (   0.12,-104.26)   49.74                80
 10/15/2023   08:24:39   (  -0.00,-104.72) (   0.04,-104.99)   30.84                80
 10/16/2023   08:03:13   (   0.01,-104.72) (  -0.97,-100.46)  486.03                80
 10/17/2023   20:25:07   (  -0.02,-104.69) (  -0.26,-105.75)  120.12                80
 10/18/2023   20:09:02   (  -0.02,-104.69) (   0.77,-101.21)  396.44                80
 10/20/2023   08:30:48   (   0.02,-104.71) (   0.40,-106.48)  201.56                80
 10/21/2023   08:09:22   (   0.02,-104.70) (  -0.57,-101.94)  314.52                80