Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 11.  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)
 05/13/2025   08:26:39   (   0.00,-104.40) (   0.16,-105.04)   72.72                80
 05/14/2025   08:05:16   (   0.00,-104.40) (  -0.85,-100.51)  442.99                80
 05/15/2025   20:27:14   (   0.00,-104.43) (  -0.28,-105.83)  159.32                80
 05/16/2025   20:11:09   (   0.01,-104.43) (   0.68,-101.29)  356.65                80
 05/18/2025   08:33:00   (  -0.01,-104.41) (   0.48,-106.58)  247.57                80
 05/19/2025   08:11:36   (  -0.01,-104.40) (  -0.54,-102.05)  268.01                80
 05/20/2025   20:33:33   (   0.02,-104.42) (  -0.65,-107.36)  334.87                80
 05/21/2025   20:17:30   (   0.02,-104.43) (   0.38,-102.84)  181.32                80
 05/23/2025   08:39:19   (  -0.02,-104.41) (   0.83,-108.11)  421.72                80
 05/24/2025   08:17:56   (  -0.02,-104.41) (  -0.20,-103.58)   93.93                80