Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 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)
 05/10/2025   20:23:34   (   0.01,-104.44) (   0.07,-104.30)   16.89                80
 05/13/2025   08:26:40   (  -0.01,-104.44) (   0.13,-105.04)   69.33                80
 05/14/2025   08:05:16   (  -0.01,-104.44) (  -0.89,-100.52)  447.13                80
 05/15/2025   20:27:13   (   0.01,-104.48) (  -0.31,-105.83)  154.02                80
 05/16/2025   20:11:10   (   0.01,-104.49) (   0.71,-101.30)  362.83                80
 05/18/2025   08:33:00   (  -0.00,-104.48) (   0.44,-106.59)  239.72                80
 05/19/2025   08:11:36   (  -0.00,-104.48) (  -0.52,-102.05)  276.78                80
 05/20/2025   20:33:33   (  -0.00,-104.51) (  -0.67,-107.36)  325.02                80
 05/21/2025   20:17:30   (  -0.00,-104.52) (   0.36,-102.83)  192.02                80
 05/23/2025   08:39:20   (   0.00,-104.52) (   0.78,-108.12)  409.56                80