Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 28.  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)
 07/28/2025   22:25:01   (  -0.01,-137.01) (   0.52,-134.74)  259.10                80
 07/30/2025   10:46:48   (   0.02,-137.01) (   0.68,-140.00)  341.66                80
 07/31/2025   10:25:24   (   0.02,-137.01) (  -0.33,-135.47)  174.76                80
 08/01/2025   22:47:20   (  -0.02,-137.01) (  -0.88,-140.77)  429.40                80
 08/02/2025   22:31:16   (  -0.02,-137.01) (   0.14,-136.24)   86.61                80
 08/05/2025   10:34:18   (   0.03,-136.98) (   0.05,-136.98)    1.24                80
 08/07/2025   22:34:50   (  -0.04,-136.96) (  -0.22,-137.75)   90.56                80
 08/08/2025   22:18:46   (  -0.05,-136.94) (   0.80,-133.22)  424.44                80
 08/10/2025   10:40:33   (   0.05,-136.92) (   0.41,-138.49)  179.14                80
 08/11/2025   10:19:09   (   0.05,-136.90) (  -0.61,-133.96)  335.50                80