Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 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)
 06/30/2025   22:47:12   (   0.01,-136.99) (  -0.82,-140.75)  427.74                80
 07/01/2025   22:31:08   (   0.01,-136.99) (   0.18,-136.22)   88.09                80
 07/04/2025   10:34:12   (  -0.01,-136.97) (  -0.02,-136.96)    1.50                80
 07/06/2025   22:34:44   (   0.02,-136.95) (  -0.18,-137.73)   90.12                80
 07/07/2025   22:18:41   (   0.02,-136.93) (   0.87,-133.21)  424.58                80
 07/09/2025   10:37:48   (  -0.02,-136.90) (   0.33,-138.48)  179.42                80
 07/10/2025   10:21:44   (  -0.02,-136.88) (  -0.67,-133.94)  334.74                80
 07/11/2025   22:41:01   (   0.01,-136.86) (  -0.53,-139.25)  273.07                80
 07/12/2025   22:24:57   (   0.01,-136.83) (   0.47,-134.72)  240.92                80