Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 27.  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)
 03/27/2023   22:33:30   (  -0.00,-137.00) (  -0.15,-137.60)   68.68                80
 03/28/2023   22:17:25   (  -0.00,-137.00) (   0.88,-133.07)  448.30                80
 03/30/2023   10:39:10   (   0.01,-137.01) (   0.32,-138.32)  150.00                80
 03/31/2023   10:17:45   (   0.01,-137.01) (  -0.72,-133.80)  366.73                80
 04/01/2023   22:42:19   (  -0.01,-136.99) (  -0.46,-139.10)  239.19                80
 04/02/2023   22:23:32   (  -0.01,-136.99) (   0.53,-134.56)  277.35                80
 04/04/2023   10:45:18   (   0.01,-137.00) (   0.66,-139.82)  321.59                80
 04/05/2023   10:23:52   (   0.01,-136.99) (  -0.39,-135.29)  194.67                80
 04/06/2023   22:48:26   (  -0.01,-136.96) (  -0.82,-140.58)  412.06                80
 04/07/2023   22:26:59   (  -0.01,-136.95) (   0.18,-136.04)  103.78                80
 04/09/2023   10:48:44   (   0.02,-136.95) (   1.00,-141.30)  496.39                80