Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 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)
 10/30/2023   10:22:55   (  -0.00,-137.03) (  -0.38,-135.29)  197.29                80
 10/31/2023   22:44:55   (   0.00,-137.02) (  -0.79,-140.61)  409.49                80
 11/01/2023   22:28:51   (  -0.00,-137.01) (   0.20,-136.08)  105.38                80
 11/03/2023   10:50:41   (   0.00,-137.00) (   0.96,-141.37)  497.57                80
 11/04/2023   10:29:18   (   0.01,-136.99) (  -0.03,-136.84)   17.03                80
 11/06/2023   22:32:34   (   0.02,-136.96) (  -0.12,-137.63)   76.76                80
 11/07/2023   22:16:30   (   0.02,-136.94) (   0.88,-133.10)  437.65                80
 11/09/2023   10:38:20   (  -0.02,-136.92) (   0.32,-138.38)  165.96                80
 11/10/2023   10:16:56   (   0.02,-136.91) (  -0.68,-133.85)  349.05                80
 11/11/2023   22:38:54   (  -0.02,-136.88) (  -0.51,-139.16)  259.42                80