Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 14.  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)
 11/14/2023   10:44:40   (  -0.00,-137.01) (   0.67,-139.90)  329.99                80
 11/15/2023   10:25:56   (   0.00,-137.01) (  -0.34,-135.38)  185.94                80
 11/16/2023   22:45:14   (  -0.01,-137.00) (  -0.82,-140.69)  420.61                80
 11/17/2023   22:29:11   (  -0.01,-136.99) (   0.20,-136.17)   94.85                80
 11/20/2023   10:32:16   (   0.01,-136.98) (   0.01,-136.90)    8.70                80
 11/22/2023   22:32:50   (  -0.01,-136.95) (  -0.19,-137.69)   83.75                80
 11/23/2023   22:16:46   (  -0.01,-136.94) (   0.84,-133.16)  431.22                80
 11/25/2023   10:35:54   (   0.02,-136.93) (   0.38,-138.43)  170.96                80
 11/26/2023   10:19:51   (   0.02,-136.92) (  -0.65,-133.90)  343.67                80
 11/27/2023   22:39:08   (  -0.03,-136.88) (  -0.53,-139.21)  264.71                80