Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 4 9.  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)
 04/09/2024   22:29:50   (  -0.00,-137.00) (   0.16,-136.16)   95.15                80
 04/12/2024   10:32:55   (   0.00,-137.01) (  -0.04,-136.91)   12.37                80
 04/14/2024   22:36:07   (  -0.00,-136.99) (  -0.17,-137.67)   77.64                80
 04/15/2024   22:14:43   (  -0.01,-136.99) (   0.84,-133.14)  438.40                80
 04/17/2024   10:39:11   (   0.01,-136.99) (   0.34,-138.41)  161.67                80
 04/18/2024   10:17:47   (   0.01,-136.98) (  -0.67,-133.87)  354.19                80
 04/19/2024   22:42:23   (  -0.02,-136.96) (  -0.52,-139.17)  252.11                80
 04/20/2024   22:20:58   (  -0.01,-136.96) (   0.49,-134.64)  263.55                80
 04/22/2024   10:45:27   (   0.01,-136.95) (   0.68,-139.91)  337.31                80