Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 18.  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)
 07/20/2025   10:34:17   (  -0.02,-136.99) (  -0.04,-136.99)    2.63                80
 07/22/2025   22:34:50   (   0.03,-136.98) (  -0.13,-137.76)   88.79                80
 07/23/2025   22:18:46   (   0.03,-136.97) (   0.88,-133.23)  426.36                80
 07/25/2025   10:37:53   (  -0.04,-136.94) (   0.32,-138.50)  177.33                80
 07/26/2025   10:21:48   (  -0.04,-136.93) (  -0.69,-133.97)  337.83                80
 07/27/2025   22:41:06   (   0.04,-136.93) (  -0.48,-139.28)  267.58                80
 07/28/2025   22:25:01   (   0.04,-136.92) (   0.54,-134.75)  247.57                80
 07/30/2025   10:44:09   (  -0.05,-136.89) (   0.67,-140.01)  356.46                80
 07/31/2025   10:28:04   (  -0.05,-136.87) (  -0.35,-135.48)  158.27                80