Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 12 17.  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)
 12/18/2024   10:47:40   (   0.01,-136.96) (   0.71,-140.03)  350.91                80
 12/19/2024   10:26:14   (   0.01,-136.95) (  -0.33,-135.50)  164.74                80
 12/20/2024   22:48:08   (  -0.02,-136.93) (  -0.90,-140.79)  440.58                80
 12/21/2024   22:32:02   (  -0.02,-136.92) (   0.15,-136.26)   75.09                80
 12/24/2024   10:35:02   (   0.02,-136.88) (   0.02,-136.99)   12.36                80
 12/26/2024   22:35:29   (  -0.02,-136.84) (  -0.22,-137.75)  103.39                80
 12/27/2024   22:19:22   (  -0.03,-136.82) (   0.78,-133.21)  411.29                80
 12/29/2024   10:41:08   (   0.03,-136.78) (   0.42,-138.47)  192.62                80
 12/30/2024   10:19:41   (   0.03,-136.75) (  -0.58,-133.93)  321.38                80