Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 12 5.  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)
 12/06/2023   10:29:47   (   0.01,-137.00) (   0.01,-136.94)    6.81                80
 12/08/2023   22:32:59   (  -0.02,-136.99) (  -0.16,-137.72)   83.40                80
 12/09/2023   22:16:55   (  -0.02,-136.98) (   0.84,-133.19)  432.08                80
 12/11/2023   10:38:43   (   0.02,-136.96) (   0.34,-138.46)  169.96                80
 12/12/2023   10:17:19   (   0.02,-136.95) (  -0.67,-133.93)  344.80                80
 12/13/2023   22:39:15   (  -0.02,-136.92) (  -0.52,-139.23)  263.11                80
 12/14/2023   22:23:11   (  -0.02,-136.90) (   0.49,-134.70)  251.05                80
 12/16/2023   10:44:58   (   0.02,-136.87) (   0.74,-139.96)  352.59                80
 12/17/2023   10:23:33   (   0.01,-136.85) (  -0.28,-135.43)  161.22                80
 12/18/2023   22:48:10   (  -0.02,-136.81) (  -0.90,-140.73)  447.54                80