Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 9 5.  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)
 09/06/2023   10:37:55   (  -0.01,-137.01) (   0.25,-138.25)  140.87                80
 09/07/2023   10:16:31   (  -0.01,-137.01) (  -0.75,-133.72)  375.24                80
 09/08/2023   22:38:28   (   0.02,-137.01) (  -0.41,-139.03)  230.06                80
 09/09/2023   22:22:24   (   0.02,-137.00) (   0.59,-134.50)  285.85                80
 09/11/2023   10:44:12   (  -0.02,-137.00) (   0.58,-139.77)  315.57                80
 09/12/2023   10:22:47   (  -0.02,-137.00) (  -0.43,-135.24)  200.17                80
 09/13/2023   22:44:44   (   0.02,-136.99) (  -0.78,-140.55)  405.65                80
 09/14/2023   22:28:39   (   0.02,-136.98) (   0.23,-136.02)  110.00                80
 09/16/2023   10:50:28   (  -0.02,-136.97) (   0.93,-141.29)  491.81                80
 09/17/2023   10:29:03   (  -0.02,-136.97) (  -0.08,-136.76)   23.48                80