Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 2.  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)
 10/02/2023   10:50:25   (  -0.01,-137.00) (   0.98,-141.28)  488.48                80
 10/03/2023   10:29:01   (   0.02,-137.01) (  -0.07,-136.76)   29.56                80
 10/05/2023   22:34:51   (  -0.01,-137.02) (  -0.11,-137.53)   58.23                80
 10/06/2023   22:13:26   (  -0.00,-137.02) (   0.89,-132.99)  458.57                80
 10/08/2023   10:37:53   (   0.00,-137.03) (   0.26,-138.27)  140.70                80
 10/09/2023   10:16:28   (  -0.00,-137.03) (  -0.74,-133.73)  375.85                80
 10/10/2023   22:41:03   (   0.00,-137.02) (  -0.47,-139.03)  229.16                80
 10/11/2023   22:19:38   (  -0.00,-137.02) (   0.54,-134.49)  287.61                80
 10/13/2023   10:44:04   (   0.02,-137.02) (   0.66,-139.75)  311.67                80
 10/14/2023   10:22:38   (   0.03,-137.02) (  -0.35,-135.22)  204.69                80
 10/15/2023   22:44:34   (  -0.03,-137.00) (  -0.83,-140.52)  401.24                80