Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 18.  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)
 11/20/2023   10:29:36   (  -0.01,-136.99) (  -0.02,-136.91)    9.10                80
 11/22/2023   22:35:30   (   0.01,-136.97) (  -0.17,-137.69)   83.00                80
 11/23/2023   22:14:07   (   0.01,-136.96) (   0.86,-133.17)  432.14                80
 11/25/2023   10:38:35   (   0.01,-136.95) (   0.37,-138.43)  169.46                80
 11/26/2023   10:17:12   (   0.01,-136.94) (  -0.66,-133.91)  345.30                80
 11/27/2023   22:41:49   (  -0.01,-136.91) (  -0.54,-139.21)  262.94                80
 11/28/2023   22:20:25   (  -0.01,-136.89) (   0.50,-134.69)  251.19                80
 11/30/2023   10:44:54   (   0.01,-136.87) (   0.73,-139.95)  352.09                80
 12/01/2023   10:23:30   (   0.00,-136.85) (  -0.31,-135.43)  161.75                80