Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 7.  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,-137.00) (  -0.12,-137.74)   84.05                80
 09/09/2025   22:18:39   (   0.03,-137.00) (   0.88,-133.20)  433.13                80
 09/11/2025   10:40:26   (  -0.03,-137.00) (   0.31,-138.47)  167.79                80
 09/12/2025   10:19:02   (  -0.03,-136.99) (  -0.74,-133.94)  348.66                80
 09/13/2025   22:40:56   (   0.04,-136.99) (  -0.48,-139.23)  255.27                80
 09/14/2025   22:24:52   (   0.04,-136.99) (   0.58,-134.71)  260.69                80
 09/16/2025   10:46:39   (  -0.04,-136.97) (   0.60,-139.97)  341.63                80
 09/17/2025   10:25:14   (  -0.04,-136.96) (  -0.40,-135.44)  174.13                80
 09/18/2025   22:47:08   (   0.04,-136.96) (  -0.81,-140.73)  430.33                80
 09/19/2025   22:31:02   (   0.05,-136.95) (   0.19,-136.19)   85.56                80