Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 6.  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)
 09/08/2025   22:34:45   (   0.03,-136.99) (  -0.12,-137.74)   84.20                80
 09/09/2025   22:18:39   (   0.03,-137.00) (   0.87,-133.20)  432.91                80
 09/11/2025   10:40:26   (  -0.03,-137.00) (   0.32,-138.46)  167.89                80
 09/12/2025   10:19:02   (  -0.03,-136.99) (  -0.74,-133.94)  348.51                80
 09/13/2025   22:40:56   (   0.03,-136.99) (  -0.48,-139.23)  255.66                80
 09/14/2025   22:24:51   (   0.04,-136.98) (   0.52,-134.69)  260.26                80
 09/16/2025   10:46:39   (  -0.04,-136.97) (   0.60,-139.97)  341.95                80
 09/17/2025   10:25:14   (  -0.04,-136.96) (  -0.40,-135.44)  173.78                80
 09/18/2025   22:47:08   (   0.04,-136.95) (  -0.81,-140.73)  430.91                80
 09/19/2025   22:31:02   (   0.04,-136.94) (   0.20,-136.19)   84.91                80