Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 7.  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)
 04/08/2025   20:23:37   (   0.01,-104.41) (   0.05,-104.29)   13.34                80
 04/11/2025   08:26:35   (  -0.01,-104.38) (   0.15,-105.01)   71.89                80
 04/12/2025   08:05:10   (  -0.01,-104.38) (  -0.91,-100.48)  445.17                80
 04/13/2025   20:27:03   (   0.01,-104.41) (  -0.31,-105.77)  155.11                80
 04/14/2025   20:10:58   (   0.02,-104.41) (   0.75,-101.24)  362.14                80
 04/16/2025   08:32:43   (  -0.02,-104.39) (   0.43,-106.50)  240.21                80
 04/17/2025   08:11:17   (  -0.02,-104.39) (  -0.58,-101.96)  276.64                80
 04/18/2025   20:33:10   (   0.01,-104.41) (  -0.61,-107.25)  324.30                80
 04/19/2025   20:17:03   (   0.01,-104.41) (   0.40,-102.72)  192.79                80
 04/21/2025   08:38:49   (  -0.00,-104.38) (   0.78,-107.98)  409.29                80