Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/03/2025   22:31:12   (   0.02,-136.95) (   0.19,-136.23)   81.97                80
 09/06/2025   10:34:14   (  -0.02,-136.91) (   0.01,-136.96)    6.89                80
 09/08/2025   22:34:43   (   0.02,-136.87) (  -0.18,-137.72)   97.27                80
 09/09/2025   22:18:38   (   0.02,-136.86) (   0.81,-133.19)  417.42                80
 09/11/2025   10:40:26   (  -0.03,-136.82) (   0.31,-138.47)  187.16                80
 09/12/2025   10:19:01   (  -0.03,-136.79) (  -0.69,-133.93)  326.82                80
 09/13/2025   22:40:55   (   0.03,-136.75) (  -0.52,-139.22)  281.05                80
 09/14/2025   22:24:50   (   0.03,-136.73) (   0.49,-134.69)  232.45                80
 09/16/2025   10:46:37   (  -0.03,-136.68) (   0.69,-139.95)  373.36                80