Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 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)
 08/29/2023   22:28:34   (   0.02,-136.99) (   0.25,-135.98)  115.80                80
 08/31/2023   10:47:42   (  -0.02,-137.00) (   0.94,-141.25)  484.25                80
 09/01/2023   10:31:39   (  -0.02,-137.00) (  -0.11,-136.73)   32.02                80
 09/03/2023   22:32:12   (   0.02,-136.99) (  -0.06,-137.51)   58.39                80
 09/04/2023   22:16:07   (   0.02,-136.99) (   0.93,-132.98)  457.44                80
 09/06/2023   10:35:15   (  -0.03,-136.99) (   0.25,-138.25)  143.69                80
 09/07/2023   10:19:11   (  -0.03,-136.98) (  -0.75,-133.72)  371.54                80
 09/08/2023   22:38:28   (   0.03,-136.96) (  -0.41,-139.03)  236.22                80
 09/09/2023   22:22:24   (   0.03,-136.95) (   0.59,-134.50)  278.75                80
 09/11/2023   10:41:32   (  -0.04,-136.94) (   0.59,-139.78)  323.27                80