Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 6 20.  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)
 06/21/2024   10:18:07   (   0.00,-137.01) (  -0.74,-133.81)  365.08                80
 06/22/2024   22:40:05   (   0.01,-136.99) (  -0.46,-139.12)  241.67                80
 06/23/2024   22:24:02   (   0.01,-136.99) (   0.55,-134.59)  273.51                80
 06/25/2024   10:45:51   (  -0.02,-136.98) (   0.63,-139.86)  328.10                80
 06/26/2024   10:24:28   (  -0.02,-136.97) (  -0.39,-135.33)  186.90                80
 06/27/2024   22:46:26   (   0.02,-136.95) (  -0.80,-140.64)  420.65                80
 06/28/2024   22:30:22   (   0.02,-136.93) (   0.21,-136.11)   94.23                80
 07/01/2024   10:33:28   (  -0.02,-136.91) (  -0.06,-136.86)    7.06                80
 07/03/2024   22:34:02   (   0.03,-136.85) (  -0.16,-137.62)   88.65                80
 07/04/2024   22:17:59   (   0.03,-136.83) (   0.86,-133.10)  425.18                80