Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 10.  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)
 06/10/2025   22:24:42   (   0.02,-137.00) (   0.53,-134.66)  266.78                80
 06/12/2025   10:43:50   (  -0.01,-136.99) (   0.66,-139.93)  334.93                80
 06/13/2025   10:27:46   (  -0.01,-136.99) (  -0.38,-135.41)  181.00                80
 06/14/2025   22:47:04   (   0.00,-136.99) (  -0.82,-140.71)  424.15                80
 06/15/2025   22:30:59   (  -0.00,-136.98) (   0.16,-136.18)   91.53                80
 06/18/2025   10:34:04   (   0.01,-136.96) (  -0.03,-136.93)    5.37                80
 06/20/2025   22:34:37   (  -0.01,-136.94) (  -0.19,-137.70)   87.27                80
 06/21/2025   22:18:33   (  -0.01,-136.92) (   0.86,-133.18)  427.27                80
 06/23/2025   10:37:41   (  -0.00,-136.89) (   0.37,-138.44)  177.28                80
 06/24/2025   10:21:37   (  -0.00,-136.87) (  -0.68,-133.92)  336.70                80