Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 22.  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)
 07/22/2025   22:34:50   (   0.03,-137.01) (  -0.13,-137.76)   85.99                80
 07/23/2025   22:18:46   (   0.03,-137.01) (   0.88,-133.23)  430.29                80
 07/25/2025   10:37:53   (  -0.04,-137.00) (   0.32,-138.50)  171.43                80
 07/26/2025   10:21:48   (  -0.04,-137.00) (  -0.69,-133.97)  344.89                80
 07/27/2025   22:41:06   (   0.04,-137.01) (  -0.48,-139.28)  258.92                80
 07/28/2025   22:25:01   (   0.04,-137.01) (   0.53,-134.75)  257.37                80
 07/30/2025   10:44:09   (  -0.04,-136.99) (   0.61,-140.02)  344.71                80
 07/31/2025   10:28:05   (  -0.04,-136.99) (  -0.41,-135.49)  171.21                80
 08/01/2025   22:47:21   (   0.05,-136.99) (  -0.81,-140.79)  433.63                80
 08/02/2025   22:31:17   (   0.05,-136.98) (   0.21,-136.26)   81.75                80
 08/05/2025   10:31:40   (  -0.06,-136.94) (  -0.02,-137.00)    7.65                80