Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 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)
 11/30/2023   10:44:54   (   0.01,-137.02) (   0.68,-139.95)  335.38                80
 12/01/2023   10:23:30   (   0.01,-137.01) (  -0.36,-135.43)  180.82                80
 12/02/2023   22:45:26   (  -0.02,-137.00) (  -0.87,-140.73)  425.03                80
 12/03/2023   22:29:23   (  -0.02,-137.00) (   0.19,-136.21)   91.07                80
 12/06/2023   10:29:47   (   0.02,-137.00) (   0.01,-136.94)    6.61                80
 12/08/2023   22:32:59   (  -0.03,-136.98) (  -0.21,-137.71)   84.42                80
 12/09/2023   22:16:54   (  -0.03,-136.97) (   0.79,-133.18)  430.93                80
 12/11/2023   10:38:42   (   0.03,-136.96) (   0.38,-138.45)  170.74                80
 12/12/2023   10:17:18   (   0.04,-136.94) (  -0.63,-133.92)  343.90                80