Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 30.  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)
 05/30/2025   22:30:48   (   0.00,-137.00) (   0.19,-136.13)   98.31                80
 06/02/2025   10:31:14   (  -0.01,-136.98) (  -0.06,-136.89)   11.99                80
 06/04/2025   22:34:27   (   0.01,-136.98) (  -0.16,-137.66)   78.42                80
 06/05/2025   22:18:23   (   0.01,-136.97) (   0.87,-133.14)  436.91                80
 06/07/2025   10:37:33   (  -0.02,-136.95) (   0.28,-138.42)  165.98                80
 06/08/2025   10:21:28   (  -0.02,-136.94) (  -0.70,-133.88)  348.86                80
 06/09/2025   22:40:45   (   0.03,-136.92) (  -0.49,-139.19)  258.26                80
 06/10/2025   22:24:42   (   0.03,-136.91) (   0.55,-134.67)  256.04                80
 06/12/2025   10:43:50   (  -0.03,-136.88) (   0.65,-139.93)  348.41                80
 06/13/2025   10:27:46   (  -0.03,-136.86) (  -0.33,-135.40)  165.49                80