Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 25.  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)
 04/27/2025   08:26:19   (  -0.01,-104.36) (   0.13,-104.95)   67.99                80
 04/28/2025   08:04:56   (  -0.02,-104.36) (  -0.87,-100.43)  447.35                80
 04/29/2025   20:26:54   (   0.02,-104.38) (  -0.30,-105.74)  155.13                80
 04/30/2025   20:10:51   (   0.03,-104.38) (   0.71,-101.22)  360.49                80
 05/02/2025   08:32:41   (  -0.03,-104.35) (   0.47,-106.50)  244.59                80
 05/03/2025   08:11:18   (  -0.03,-104.35) (  -0.54,-101.97)  270.96                80
 05/04/2025   20:33:16   (   0.03,-104.38) (  -0.60,-107.29)  331.40                80
 05/05/2025   20:17:12   (   0.03,-104.38) (   0.41,-102.76)  184.88                80
 05/07/2025   08:39:02   (  -0.03,-104.37) (   0.81,-108.03)  418.55                80
 05/08/2025   08:17:38   (  -0.03,-104.37) (  -0.21,-103.51)   97.59                80