Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 15.  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)
 08/15/2023   10:50:15   (  -0.01,-137.00) (   0.93,-141.20)  478.83                80
 08/16/2023   10:28:48   (  -0.00,-137.00) (  -0.06,-136.66)   38.40                80
 08/18/2023   22:31:56   (  -0.00,-137.00) (  -0.12,-137.42)   48.06                80
 08/19/2023   22:15:51   (  -0.00,-137.00) (   0.93,-132.89)  468.89                80
 08/21/2023   10:37:36   (   0.00,-137.00) (   0.26,-138.15)  131.49                80
 08/22/2023   10:16:10   (   0.00,-136.99) (  -0.73,-133.61)  384.87                80
 08/23/2023   22:38:04   (   0.00,-136.98) (  -0.42,-138.91)  220.10                80
 08/24/2023   22:21:57   (   0.00,-136.97) (   0.58,-134.37)  295.61                80
 08/26/2023   10:41:03   (  -0.01,-136.94) (   0.61,-139.63)  306.69                80
 08/27/2023   10:24:56   (  -0.01,-136.93) (  -0.39,-135.09)  208.47                80
 08/28/2023   22:44:11   (   0.00,-136.90) (  -0.76,-140.40)  398.14                80