Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 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)
 06/28/2025   10:43:59   (  -0.02,-136.99) (   0.62,-139.97)  338.91                80
 06/29/2025   10:27:55   (  -0.01,-136.99) (  -0.37,-135.44)  177.16                80
 06/30/2025   22:47:12   (   0.01,-137.00) (  -0.83,-140.75)  427.64                80
 07/01/2025   22:31:08   (   0.01,-136.99) (   0.16,-136.21)   88.30                80
 07/04/2025   10:31:31   (  -0.01,-136.97) (  -0.01,-136.96)    1.73                80
 07/06/2025   22:34:45   (   0.02,-136.95) (  -0.14,-137.74)   89.51                80
 07/07/2025   22:18:41   (   0.02,-136.94) (   0.86,-133.21)  425.28                80
 07/09/2025   10:37:48   (  -0.02,-136.91) (   0.34,-138.47)  178.70                80
 07/10/2025   10:21:44   (  -0.02,-136.89) (  -0.66,-133.94)  335.62                80