Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2024 4 18.  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)
 04/18/2024   08:38:31   (   0.01,-104.70) (   0.79,-108.17)  395.65                80
 04/19/2024   08:17:07   (   0.01,-104.70) (  -0.23,-103.64)  121.12                80
 04/20/2024   20:39:03   (  -0.01,-104.69) (  -0.95,-108.94)  484.33                80
 04/21/2024   20:22:59   (  -0.01,-104.69) (   0.07,-104.41)   32.71                80
 04/24/2024   08:26:01   (   0.01,-104.71) (   0.09,-105.14)   48.18                80
 04/25/2024   08:04:36   (   0.01,-104.72) (  -0.88,-100.60)  468.69                80
 04/26/2024   20:26:32   (   0.00,-104.70) (  -0.27,-105.90)  137.45                80
 04/27/2024   20:10:27   (  -0.00,-104.70) (   0.72,-101.36)  379.27                80
 04/29/2024   08:29:34   (   0.00,-104.71) (   0.46,-106.63)  219.10                80
 04/30/2024   08:13:30   (   0.01,-104.71) (  -0.59,-102.10)  297.54                80
 05/01/2024   20:32:45   (  -0.01,-104.68) (  -0.59,-107.40)  308.56                80