Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 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)
 11/22/2023   22:32:50   (  -0.00,-137.00) (  -0.18,-137.69)   78.80                80
 11/23/2023   22:16:47   (  -0.00,-137.00) (   0.85,-133.16)  437.24                80
 11/25/2023   10:35:56   (   0.01,-137.00) (   0.32,-138.44)  163.30                80
 11/26/2023   10:19:52   (   0.01,-137.00) (  -0.71,-133.91)  352.34                80
 11/27/2023   22:39:10   (  -0.02,-136.98) (  -0.49,-139.22)  254.57                80
 11/28/2023   22:23:05   (  -0.02,-136.97) (   0.48,-134.68)  260.66                80
 11/30/2023   10:44:55   (   0.03,-136.96) (   0.69,-139.96)  341.08                80
 12/01/2023   10:23:30   (   0.03,-136.95) (  -0.29,-135.42)  173.82                80
 12/02/2023   22:48:07   (  -0.03,-136.93) (  -0.90,-140.73)  433.93                80
 12/03/2023   22:26:44   (  -0.03,-136.91) (   0.14,-136.21)   80.81                80