Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 23.  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)
 04/24/2025   20:23:12   (   0.01,-104.39) (   0.05,-104.20)   21.33                80
 04/27/2025   08:26:19   (  -0.01,-104.36) (   0.15,-104.95)   68.34                80
 04/28/2025   08:04:57   (  -0.02,-104.35) (  -0.91,-100.44)  446.98                80
 04/29/2025   20:26:55   (   0.02,-104.38) (  -0.26,-105.75)  155.52                80
 04/30/2025   20:10:52   (   0.02,-104.38) (   0.74,-101.22)  360.03                80
 05/02/2025   08:32:42   (  -0.02,-104.35) (   0.44,-106.50)  245.16                80
 05/03/2025   08:11:18   (  -0.02,-104.35) (  -0.56,-101.98)  270.26                80
 05/04/2025   20:33:16   (   0.01,-104.37) (  -0.65,-107.28)  332.11                80
 05/05/2025   20:17:12   (   0.01,-104.37) (   0.36,-102.76)  184.06                80
 05/07/2025   08:39:03   (  -0.01,-104.36) (   0.82,-108.04)  419.51                80