Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 28.  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)
 09/29/2025   22:40:44   (   0.00,-136.98) (  -0.50,-139.17)  249.69                80
 09/30/2025   22:24:39   (   0.01,-136.97) (   0.52,-134.63)  265.93                80
 10/02/2025   10:46:25   (  -0.02,-136.95) (   0.67,-139.89)  336.79                80
 10/03/2025   10:25:00   (  -0.02,-136.93) (  -0.35,-135.36)  178.64                80
 10/04/2025   22:46:54   (   0.01,-136.92) (  -0.84,-140.65)  426.58                80
 10/05/2025   22:30:49   (   0.01,-136.90) (   0.18,-136.12)   88.81                80
 10/08/2025   10:33:48   (   0.02,-136.85) (   0.01,-136.84)    0.90                80
 10/10/2025   22:34:16   (  -0.03,-136.79) (  -0.22,-137.59)   91.78                80
 10/11/2025   22:18:11   (  -0.03,-136.76) (   0.82,-133.06)  422.13                80