Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 20.  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)
 11/21/2023   08:31:38   (  -0.01,-104.68) (   0.44,-106.68)  227.71                80
 11/22/2023   08:10:14   (  -0.01,-104.69) (  -0.59,-102.15)  288.81                80
 11/23/2023   20:32:12   (   0.01,-104.67) (  -0.62,-107.46)  318.27                80
 11/24/2023   20:16:08   (   0.01,-104.67) (   0.41,-102.93)  198.52                80
 11/26/2023   08:37:57   (  -0.01,-104.71) (   0.76,-108.21)  398.28                80
 11/27/2023   08:16:34   (  -0.01,-104.72) (  -0.27,-103.69)  118.21                80
 11/28/2023   20:38:31   (   0.01,-104.69) (  -0.93,-108.99)  489.42                80
 11/29/2023   20:22:27   (   0.01,-104.70) (   0.04,-104.46)   27.37                80
 12/02/2023   08:25:33   (   0.00,-104.75) (   0.09,-105.21)   52.33                80
 12/03/2023   08:04:08   (   0.00,-104.75) (  -0.89,-100.67)  464.51                80