Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 10 9.  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)
 10/10/2023   08:15:48   (  -0.01,-104.73) (  -0.31,-103.50)  141.49                80
 10/11/2023   20:37:43   (   0.01,-104.73) (  -0.88,-108.80)  463.29                80
 10/12/2023   20:21:38   (   0.01,-104.74) (   0.12,-104.26)   54.64                80
 10/15/2023   08:24:39   (  -0.01,-104.78) (   0.04,-104.99)   23.58                80
 10/16/2023   08:03:13   (  -0.01,-104.79) (  -0.98,-100.46)  494.00                80
 10/17/2023   20:25:08   (   0.01,-104.78) (  -0.20,-105.76)  111.14                80
 10/18/2023   20:09:03   (   0.01,-104.79) (   0.83,-101.23)  406.35                80
 10/20/2023   08:30:49   (  -0.02,-104.82) (   0.34,-106.49)  190.43                80
 10/21/2023   08:09:24   (  -0.03,-104.82) (  -0.69,-101.96)  326.59                80
 10/22/2023   20:31:18   (   0.03,-104.80) (  -0.52,-107.25)  279.47                80
 10/23/2023   20:15:13   (   0.04,-104.81) (   0.52,-102.72)  237.99                80