Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 21.  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   (   0.04,-136.99) (  -0.12,-137.76)   87.65                80
 07/23/2025   22:18:46   (   0.04,-136.99) (   0.89,-133.23)  428.68                80
 07/25/2025   10:37:53   (  -0.05,-136.98) (   0.31,-138.50)  173.07                80
 07/26/2025   10:21:49   (  -0.05,-136.98) (  -0.70,-133.97)  343.29                80
 07/27/2025   22:41:06   (   0.05,-137.00) (  -0.47,-139.28)  260.33                80
 07/28/2025   22:25:01   (   0.05,-137.00) (   0.54,-134.75)  255.99                80
 07/30/2025   10:44:10   (  -0.05,-136.98) (   0.60,-140.03)  346.12                80
 07/31/2025   10:28:05   (  -0.05,-136.98) (  -0.41,-135.49)  169.82                80
 08/01/2025   22:47:22   (   0.06,-136.98) (  -0.80,-140.79)  434.85                80
 08/02/2025   22:31:17   (   0.06,-136.97) (   0.21,-136.26)   80.56                80