Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 29.  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)
 08/29/2025   22:24:59   (   0.03,-136.99) (   0.54,-134.73)  258.05                80
 08/31/2025   10:46:46   (  -0.03,-136.98) (   0.67,-139.99)  344.10                80
 09/01/2025   10:25:22   (  -0.03,-136.97) (  -0.37,-135.47)  171.37                80
 09/02/2025   22:47:17   (   0.04,-136.96) (  -0.82,-140.77)  434.28                80
 09/03/2025   22:31:12   (   0.04,-136.95) (   0.23,-136.24)   80.92                80
 09/06/2025   10:34:14   (  -0.05,-136.91) (  -0.01,-136.97)    7.75                80
 09/08/2025   22:34:44   (   0.05,-136.87) (  -0.17,-137.73)   99.14                80
 09/09/2025   22:18:40   (   0.05,-136.85) (   0.89,-133.21)  415.42                80
 09/11/2025   10:40:27   (  -0.05,-136.81) (   0.31,-138.47)  189.01                80
 09/12/2025   10:19:01   (  -0.05,-136.78) (  -0.68,-133.93)  324.81                80