Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 19.  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)
 05/20/2025   20:33:33   (   0.00,-104.42) (  -0.67,-107.35)  335.05                80
 05/21/2025   20:17:30   (   0.00,-104.42) (   0.35,-102.83)  181.19                80
 05/23/2025   08:39:19   (  -0.00,-104.40) (   0.84,-108.10)  422.14                80
 05/24/2025   08:17:55   (  -0.00,-104.40) (  -0.18,-103.58)   93.55                80
 05/26/2025   20:23:49   (   0.00,-104.41) (   0.02,-104.36)    6.23                80
 05/29/2025   08:26:54   (   0.01,-104.39) (   0.19,-105.10)   81.21                80
 05/30/2025   08:05:31   (   0.02,-104.39) (  -0.84,-100.58)  434.44                80
 05/31/2025   20:27:28   (  -0.02,-104.40) (  -0.35,-105.89)  169.07                80
 06/01/2025   20:11:24   (  -0.02,-104.40) (   0.69,-101.36)  347.30                80