Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 22.  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   22:38:20   (  -0.01,-137.01) (  -0.45,-138.97)  223.66                80
 08/24/2023   22:22:15   (  -0.01,-137.01) (   0.53,-134.44)  292.12                80
 08/26/2023   10:44:04   (   0.02,-137.01) (   0.61,-139.72)  309.09                80
 08/27/2023   10:22:40   (   0.02,-137.00) (  -0.37,-135.19)  206.07                80
 08/28/2023   22:44:37   (  -0.03,-136.97) (  -0.80,-140.50)  401.43                80
 08/29/2023   22:28:33   (  -0.03,-136.96) (   0.19,-135.97)  113.50                80
 08/31/2023   10:50:21   (   0.03,-136.95) (   1.01,-141.24)  488.46                80
 09/01/2023   10:28:58   (   0.03,-136.94) (  -0.05,-136.72)   26.43                80
 09/03/2023   22:34:49   (  -0.03,-136.90) (  -0.18,-137.49)   67.30                80
 09/04/2023   22:13:25   (  -0.03,-136.88) (   0.82,-132.95)  447.09                80