Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 5.  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)
 06/05/2025   22:15:43   (   0.01,-137.00) (   0.88,-133.14)  440.87                80
 06/07/2025   10:40:12   (  -0.01,-137.00) (   0.33,-138.40)  160.99                80
 06/08/2025   10:18:48   (  -0.02,-136.99) (  -0.72,-133.88)  354.47                80
 06/09/2025   22:40:45   (   0.02,-136.98) (  -0.48,-139.19)  251.63                80
 06/10/2025   22:24:42   (   0.02,-136.97) (   0.56,-134.67)  263.33                80
 06/12/2025   10:43:50   (  -0.02,-136.95) (   0.64,-139.94)  339.94                80
 06/13/2025   10:27:46   (  -0.02,-136.94) (  -0.35,-135.40)  174.72                80
 06/14/2025   22:47:03   (   0.01,-136.91) (  -0.85,-140.71)  432.60                80
 06/15/2025   22:30:59   (  -0.00,-136.90) (   0.13,-136.17)   81.91                80
 06/18/2025   10:34:03   (   0.01,-136.85) (   0.00,-136.92)    8.40                80