Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 18.  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)
 05/19/2025   08:11:36   (  -0.01,-104.39) (  -0.53,-102.05)  267.18                80
 05/20/2025   20:33:33   (   0.00,-104.42) (  -0.66,-107.36)  335.17                80
 05/21/2025   20:17:30   (   0.00,-104.42) (   0.37,-102.83)  181.04                80
 05/23/2025   08:39:19   (  -0.00,-104.40) (   0.83,-108.11)  422.29                80
 05/24/2025   08:17:56   (  -0.00,-104.40) (  -0.20,-103.58)   93.37                80
 05/26/2025   20:23:49   (   0.00,-104.41) (   0.04,-104.37)    6.59                80
 05/29/2025   08:26:54   (   0.01,-104.39) (   0.17,-105.11)   81.51                80
 05/30/2025   08:05:31   (   0.01,-104.39) (  -0.86,-100.58)  434.10                80
 05/31/2025   20:27:27   (  -0.02,-104.40) (  -0.38,-105.88)  169.52                80