Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 29.  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)
 07/30/2025   10:46:48   (   0.01,-137.00) (   0.68,-140.00)  341.89                80
 07/31/2025   10:25:24   (   0.01,-137.00) (  -0.34,-135.47)  174.40                80
 08/01/2025   22:47:20   (  -0.02,-137.00) (  -0.88,-140.77)  430.08                80
 08/02/2025   22:31:16   (  -0.02,-137.00) (   0.14,-136.24)   85.80                80
 08/05/2025   10:34:18   (   0.03,-136.97) (   0.04,-136.98)    1.37                80
 08/07/2025   22:34:50   (  -0.04,-136.94) (  -0.22,-137.75)   92.05                80
 08/08/2025   22:18:46   (  -0.04,-136.93) (   0.81,-133.22)  422.81                80
 08/10/2025   10:40:33   (   0.04,-136.90) (   0.40,-138.49)  180.86                80
 08/11/2025   10:19:09   (   0.04,-136.88) (  -0.62,-133.96)  333.65                80