Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 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)
 04/05/2025   08:39:14   (  -0.03,-104.38) (   0.79,-108.07)  419.72                80
 04/06/2025   08:17:48   (  -0.02,-104.38) (  -0.19,-103.53)   97.08                80
 04/08/2025   20:23:37   (   0.01,-104.41) (   0.05,-104.29)   13.63                80
 04/11/2025   08:26:35   (  -0.01,-104.40) (   0.15,-105.01)   70.70                80
 04/12/2025   08:05:10   (  -0.01,-104.40) (  -0.90,-100.48)  446.58                80
 04/13/2025   20:27:03   (   0.01,-104.43) (  -0.31,-105.77)  153.78                80
 04/14/2025   20:10:58   (   0.02,-104.43) (   0.75,-101.24)  363.66                80
 04/16/2025   08:32:43   (  -0.01,-104.41) (   0.43,-106.50)  237.98                80
 04/17/2025   08:11:17   (  -0.01,-104.41) (  -0.57,-101.96)  279.07                80