Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2026 6 27.  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)
 06/28/2026   22:40:54   (  -0.00,-136.99) (  -0.43,-139.00)  227.93                80
 06/29/2026   22:24:49   (  -0.01,-136.98) (   0.55,-134.46)  287.16                80
 07/01/2026   10:46:38   (   0.01,-136.97) (   0.64,-139.74)  315.97                80
 07/02/2026   10:25:13   (   0.02,-136.95) (  -0.35,-135.20)  198.72                80
 07/03/2026   22:47:12   (  -0.02,-136.94) (  -0.80,-140.53)  408.65                80
 07/04/2026   22:31:07   (  -0.02,-136.92) (   0.19,-135.99)  105.85                80
 07/06/2026   10:52:55   (   0.02,-136.90) (   0.99,-141.27)  497.91                80
 07/07/2026   10:31:31   (   0.02,-136.88) (   0.00,-136.74)   16.11                80
 07/09/2026   22:34:45   (  -0.03,-136.83) (  -0.16,-137.53)   79.29                80
 07/10/2026   22:18:40   (  -0.03,-136.80) (   0.83,-133.00)  433.98                80