Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 1.  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)
 09/02/2025   22:47:17   (   0.02,-136.96) (  -0.83,-140.76)  433.39                80
 09/03/2025   22:31:11   (   0.02,-136.95) (   0.16,-136.23)   81.90                80
 09/06/2025   10:34:14   (  -0.02,-136.91) (  -0.01,-136.96)    6.37                80
 09/08/2025   22:34:44   (   0.02,-136.87) (  -0.16,-137.73)   97.59                80
 09/09/2025   22:18:38   (   0.02,-136.85) (   0.83,-133.19)  417.02                80
 09/11/2025   10:40:26   (  -0.02,-136.81) (   0.36,-138.46)  187.54                80
 09/12/2025   10:19:00   (  -0.02,-136.79) (  -0.64,-133.92)  326.36                80
 09/13/2025   22:40:55   (   0.03,-136.75) (  -0.51,-139.23)  281.67                80
 09/14/2025   22:24:50   (   0.03,-136.72) (   0.50,-134.69)  231.78                80