Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 11 19.  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   10:32:16   (  -0.01,-136.99) (   0.00,-136.91)    9.66                80
 11/22/2023   22:35:31   (   0.01,-136.97) (  -0.14,-137.70)   82.97                80
 11/23/2023   22:14:06   (   0.01,-136.96) (   0.83,-133.16)  432.17                80
 11/25/2023   10:38:36   (   0.01,-136.95) (   0.34,-138.44)  169.40                80
 11/26/2023   10:17:12   (   0.01,-136.94) (  -0.69,-133.91)  345.33                80
 11/27/2023   22:41:50   (  -0.01,-136.91) (  -0.51,-139.22)  262.95                80
 11/28/2023   22:20:25   (  -0.01,-136.89) (   0.47,-134.68)  251.19                80
 11/30/2023   10:44:54   (   0.01,-136.87) (   0.70,-139.96)  352.08                80
 12/01/2023   10:23:31   (   0.00,-136.85) (  -0.33,-135.43)  161.76                80
 12/02/2023   22:48:07   (  -0.01,-136.81) (  -0.91,-140.73)  447.28                80