Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 21.  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)
 05/21/2025   20:17:30   (  -0.01,-104.42) (   0.36,-102.83)  181.63                80
 05/23/2025   08:39:19   (   0.00,-104.40) (   0.84,-108.10)  421.69                80
 05/24/2025   08:17:55   (   0.00,-104.40) (  -0.19,-103.58)   94.16                80
 05/26/2025   20:23:49   (  -0.00,-104.42) (   0.03,-104.36)    7.15                80
 05/29/2025   08:26:55   (  -0.01,-104.40) (   0.13,-105.12)   80.83                80
 05/30/2025   08:05:31   (  -0.01,-104.40) (  -0.85,-100.58)  434.72                80
 05/31/2025   20:27:28   (   0.02,-104.41) (  -0.34,-105.89)  168.82                80
 06/01/2025   20:11:24   (   0.02,-104.42) (   0.69,-101.36)  347.63                80
 06/03/2025   08:33:14   (  -0.02,-104.41) (   0.48,-106.64)  254.11                80
 06/04/2025   08:11:50   (  -0.02,-104.41) (  -0.56,-102.12)  262.16                80