Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 9.  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)
 10/09/2023   10:16:27   (  -0.00,-136.99) (  -0.72,-133.72)  372.12                80
 10/10/2023   22:38:22   (   0.00,-136.98) (  -0.48,-139.02)  232.73                80
 10/11/2023   22:22:18   (   0.00,-136.98) (   0.58,-134.50)  283.35                80
 10/13/2023   10:44:04   (  -0.00,-136.96) (   0.60,-139.76)  318.22                80
 10/14/2023   10:22:39   (  -0.00,-136.95) (  -0.41,-135.23)  197.50                80
 10/15/2023   22:44:33   (   0.00,-136.94) (  -0.83,-140.52)  408.36                80
 10/16/2023   22:28:28   (  -0.00,-136.92) (   0.19,-135.98)  106.95                80
 10/18/2023   10:47:34   (   0.01,-136.90) (   0.97,-141.25)  495.81                80
 10/19/2023   10:28:48   (   0.02,-136.87) (   0.01,-136.70)   19.08                80
 10/21/2023   22:31:57   (  -0.02,-136.81) (  -0.14,-137.48)   74.98                80
 10/22/2023   22:15:51   (  -0.02,-136.79) (   0.83,-132.93)  439.01                80