Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 3.  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)
 06/04/2025   22:34:27   (   0.00,-137.00) (  -0.15,-137.66)   74.90                80
 06/05/2025   22:18:23   (   0.00,-137.01) (   0.89,-133.14)  441.29                80
 06/07/2025   10:40:12   (  -0.01,-137.00) (   0.32,-138.41)  160.10                80
 06/08/2025   10:18:48   (  -0.01,-137.00) (  -0.72,-133.88)  355.58                80
 06/09/2025   22:40:45   (   0.01,-136.99) (  -0.47,-139.19)  250.36                80
 06/10/2025   22:24:41   (   0.02,-136.98) (   0.52,-134.66)  264.78                80
 06/12/2025   10:43:50   (  -0.02,-136.97) (   0.61,-139.94)  338.19                80
 06/13/2025   10:27:46   (  -0.03,-136.95) (  -0.38,-135.41)  176.56                80
 06/14/2025   22:47:03   (   0.03,-136.93) (  -0.81,-140.71)  430.73                80
 06/15/2025   22:30:59   (   0.03,-136.92) (   0.18,-136.18)   83.81                80