Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 23.  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)
 08/23/2023   22:38:21   (   0.03,-137.02) (  -0.39,-138.98)  223.82                80
 08/24/2023   22:22:16   (   0.03,-137.02) (   0.60,-134.45)  292.15                80
 08/26/2023   10:41:26   (  -0.04,-137.02) (   0.55,-139.73)  308.73                80
 08/27/2023   10:25:21   (  -0.04,-137.02) (  -0.44,-135.20)  206.60                80
 08/28/2023   22:44:38   (   0.05,-136.99) (  -0.74,-140.51)  400.98                80
 08/29/2023   22:28:34   (   0.05,-136.99) (   0.25,-135.98)  114.19                80
 08/31/2023   10:47:43   (  -0.05,-136.98) (   0.88,-141.26)  487.36                80
 09/01/2023   10:31:39   (  -0.05,-136.97) (  -0.11,-136.73)   27.74                80
 09/03/2023   22:32:12   (   0.05,-136.94) (  -0.06,-137.51)   65.37                80
 09/04/2023   22:16:07   (   0.05,-136.92) (   0.94,-132.98)  449.32                80