Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 28.  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)
 04/29/2025   20:26:54   (   0.02,-104.38) (  -0.29,-105.74)  155.02                80
 04/30/2025   20:10:51   (   0.02,-104.38) (   0.71,-101.22)  360.56                80
 05/02/2025   08:32:41   (  -0.02,-104.35) (   0.47,-106.50)  244.35                80
 05/03/2025   08:11:18   (  -0.02,-104.35) (  -0.53,-101.97)  271.28                80
 05/04/2025   20:33:16   (   0.02,-104.38) (  -0.62,-107.29)  331.15                80
 05/05/2025   20:17:13   (   0.01,-104.38) (   0.39,-102.76)  185.13                80
 05/07/2025   08:39:03   (  -0.02,-104.37) (   0.78,-108.04)  418.41                80
 05/08/2025   08:17:39   (  -0.02,-104.37) (  -0.23,-103.52)   97.75                80
 05/10/2025   20:23:33   (   0.03,-104.40) (   0.06,-104.30)   11.74                80