Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 6.  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)
 10/08/2023   10:37:52   (  -0.00,-136.99) (   0.30,-138.25)  144.07                80
 10/09/2023   10:16:28   (  -0.00,-136.99) (  -0.76,-133.73)  372.08                80
 10/10/2023   22:38:23   (   0.00,-136.98) (  -0.44,-139.03)  232.75                80
 10/11/2023   22:22:18   (   0.00,-136.98) (   0.56,-134.49)  283.33                80
 10/13/2023   10:44:04   (  -0.00,-136.97) (   0.62,-139.76)  318.14                80
 10/14/2023   10:22:39   (  -0.00,-136.96) (  -0.39,-135.22)  197.56                80
 10/15/2023   22:44:34   (  -0.00,-136.94) (  -0.79,-140.53)  408.26                80
 10/16/2023   22:28:28   (  -0.00,-136.93) (   0.23,-135.99)  107.11                80
 10/18/2023   10:47:34   (   0.01,-136.90) (   0.99,-141.25)  495.65                80
 10/19/2023   10:28:48   (   0.02,-136.88) (  -0.03,-136.71)   19.07                80