Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 4.  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)
 04/05/2025   08:39:14   (  -0.03,-104.38) (   0.81,-108.06)  419.82                80
 04/06/2025   08:17:48   (  -0.02,-104.38) (  -0.23,-103.53)   96.92                80
 04/08/2025   20:23:36   (   0.01,-104.41) (   0.03,-104.29)   13.53                80
 04/11/2025   08:26:36   (  -0.01,-104.39) (   0.11,-105.02)   71.02                80
 04/12/2025   08:05:10   (  -0.01,-104.39) (  -0.89,-100.48)  446.20                80
 04/13/2025   20:27:04   (   0.01,-104.42) (  -0.27,-105.78)  154.13                80
 04/14/2025   20:10:57   (   0.02,-104.43) (   0.73,-101.24)  363.26                80
 04/16/2025   08:32:43   (  -0.01,-104.41) (   0.45,-106.50)  238.52                80
 04/17/2025   08:11:16   (  -0.01,-104.40) (  -0.55,-101.96)  278.47                80