Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 6 3.  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)
 06/04/2025   08:11:50   (  -0.00,-104.40) (  -0.52,-102.11)  261.13                80
 06/05/2025   20:33:47   (   0.00,-104.41) (  -0.67,-107.41)  342.61                80
 06/06/2025   20:17:43   (   0.00,-104.41) (   0.37,-102.89)  173.68                80
 06/08/2025   08:39:32   (  -0.00,-104.40) (   0.84,-108.16)  428.16                80
 06/09/2025   08:18:07   (  -0.00,-104.40) (  -0.15,-103.63)   87.55                80
 06/11/2025   20:21:21   (   0.01,-104.40) (   0.00,-104.41)    1.54                80
 06/14/2025   08:27:06   (  -0.01,-104.39) (   0.14,-105.16)   87.67                80
 06/15/2025   08:05:41   (  -0.01,-104.38) (  -0.86,-100.63)  427.87                80
 06/16/2025   20:27:39   (   0.01,-104.38) (  -0.33,-105.94)  177.34                80