Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 3 24.  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)
 03/24/2023   10:51:47   (   0.01,-137.01) (   1.01,-141.36)  496.59                80
 03/25/2023   10:30:21   (   0.01,-137.00) (  -0.03,-136.83)   19.67                80
 03/27/2023   22:33:29   (   0.00,-136.98) (  -0.15,-137.59)   70.44                80
 03/28/2023   22:17:23   (   0.00,-136.97) (   0.85,-133.05)  445.58                80
 03/30/2023   10:36:28   (  -0.00,-136.96) (   0.32,-138.32)  155.11                80
 03/31/2023   10:20:22   (   0.00,-136.95) (  -0.70,-133.78)  360.73                80
 04/01/2023   22:39:35   (  -0.01,-136.92) (  -0.49,-139.07)  245.67                80
 04/02/2023   22:23:27   (  -0.02,-136.90) (   0.48,-134.53)  270.29                80
 04/04/2023   10:45:13   (   0.00,-136.89) (   0.65,-139.80)  331.29                80
 04/05/2023   10:23:46   (  -0.01,-136.87) (  -0.39,-135.26)  183.94                80
 04/06/2023   22:45:38   (   0.02,-136.83) (  -0.81,-140.55)  423.48                80