Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 8.  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   22:34:44   (   0.03,-137.00) (  -0.14,-137.73)   83.88                80
 09/09/2025   22:18:39   (   0.03,-137.00) (   0.86,-133.20)  433.31                80
 09/11/2025   10:40:27   (  -0.03,-137.00) (   0.27,-138.47)  167.76                80
 09/12/2025   10:19:02   (  -0.03,-137.00) (  -0.72,-133.94)  348.72                80
 09/13/2025   22:40:57   (   0.04,-137.00) (  -0.44,-139.24)  254.97                80
 09/14/2025   22:24:51   (   0.04,-136.99) (   0.56,-134.70)  261.01                80
 09/16/2025   10:46:39   (  -0.04,-136.97) (   0.62,-139.97)  341.40                80
 09/17/2025   10:25:13   (  -0.04,-136.96) (  -0.38,-135.43)  174.38                80
 09/18/2025   22:47:09   (   0.04,-136.96) (  -0.78,-140.74)  429.86                80
 09/19/2025   22:31:03   (   0.05,-136.95) (   0.23,-136.20)   86.05                80
 09/22/2025   10:31:25   (  -0.05,-136.92) (  -0.06,-136.93)    1.67                80