Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 6 24.  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)
 06/24/2023   10:26:03   (  -0.01,-137.02) (  -0.42,-135.30)  196.68                80
 06/25/2023   22:45:19   (   0.00,-137.00) (  -0.80,-140.59)  409.04                80
 06/26/2023   22:29:13   (  -0.00,-137.00) (   0.19,-136.06)  107.24                80
 06/28/2023   10:48:20   (  -0.00,-137.00) (   0.96,-141.33)  493.01                80
 06/29/2023   10:32:15   (  -0.01,-137.00) (  -0.03,-136.79)   22.65                80
 07/01/2023   22:32:46   (   0.02,-136.95) (  -0.12,-137.57)   70.08                80
 07/02/2023   22:16:40   (   0.02,-136.94) (   0.88,-133.03)  444.72                80
 07/04/2023   10:35:48   (  -0.01,-136.92) (   0.27,-138.31)  157.58                80
 07/05/2023   10:19:42   (  -0.01,-136.90) (  -0.73,-133.77)  357.01                80
 07/06/2023   22:38:56   (   0.00,-136.86) (  -0.51,-139.06)  251.74                80
 07/07/2023   22:22:51   (  -0.00,-136.84) (   0.49,-134.53)  262.77                80