Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 6 8.  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)
 06/09/2025   08:18:08   (   0.01,-104.41) (  -0.17,-103.63)   88.53                80
 06/11/2025   20:21:22   (  -0.01,-104.41) (   0.01,-104.41)    1.49                80
 06/14/2025   08:27:06   (   0.00,-104.40) (   0.14,-105.16)   85.84                80
 06/15/2025   08:05:42   (  -0.00,-104.40) (  -0.84,-100.63)  429.76                80
 06/16/2025   20:27:39   (   0.01,-104.40) (  -0.36,-105.93)  175.37                80
 06/17/2025   20:11:36   (   0.01,-104.40) (   0.68,-101.41)  340.86                80
 06/19/2025   08:33:24   (  -0.01,-104.40) (   0.50,-106.68)  259.80                80
 06/20/2025   08:12:00   (  -0.01,-104.40) (  -0.48,-102.15)  255.94                80
 06/21/2025   20:33:58   (   0.01,-104.39) (  -0.66,-107.47)  350.12                80