Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 9 29.  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)
 09/29/2023   22:44:43   (   0.02,-137.00) (  -0.79,-140.55)  405.73                80
 09/30/2023   22:28:39   (   0.02,-136.99) (   0.25,-136.03)  110.49                80
 10/02/2023   10:50:25   (  -0.01,-136.99) (   0.97,-141.29)  490.06                80
 10/03/2023   10:29:01   (  -0.00,-136.98) (  -0.07,-136.76)   25.96                80
 10/05/2023   22:34:52   (  -0.00,-136.96) (  -0.11,-137.53)   64.75                80
 10/06/2023   22:13:26   (   0.00,-136.95) (   0.88,-132.99)  450.53                80
 10/08/2023   10:37:53   (   0.00,-136.93) (   0.28,-138.26)  151.46                80
 10/09/2023   10:16:28   (  -0.00,-136.92) (  -0.72,-133.73)  363.57                80
 10/10/2023   22:41:03   (  -0.00,-136.89) (  -0.49,-139.03)  243.27                80
 10/11/2023   22:19:38   (   0.00,-136.88) (   0.51,-134.49)  271.78                80