Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 13.  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)
 08/13/2025   22:25:00   (  -0.01,-137.01) (   0.48,-134.73)  259.35                80
 08/15/2025   10:46:49   (   0.01,-137.00) (   0.67,-140.01)  342.87                80
 08/16/2025   10:25:23   (   0.01,-136.99) (  -0.30,-135.47)  173.03                80
 08/17/2025   22:47:20   (  -0.02,-136.99) (  -0.87,-140.77)  431.19                80
 08/18/2025   22:31:15   (  -0.02,-136.98) (   0.16,-136.25)   84.34                80
 08/21/2025   10:31:38   (   0.03,-136.94) (   0.02,-136.98)    4.29                80
 08/23/2025   22:34:49   (  -0.04,-136.93) (  -0.20,-137.75)   93.14                80
 08/24/2025   22:18:43   (  -0.03,-136.92) (   0.78,-133.21)  422.16                80
 08/26/2025   10:40:32   (   0.04,-136.89) (   0.38,-138.48)  181.68                80
 08/27/2025   10:19:06   (   0.04,-136.87) (  -0.60,-133.94)  333.21                80