Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 8.  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)
 06/09/2025   22:40:46   (   0.02,-136.98) (  -0.47,-139.19)  251.41                80
 06/10/2025   22:24:41   (   0.02,-136.97) (   0.51,-134.66)  263.78                80
 06/12/2025   10:43:50   (  -0.01,-136.95) (   0.68,-139.92)  339.62                80
 06/13/2025   10:27:46   (  -0.00,-136.94) (  -0.36,-135.40)  175.16                80
 06/14/2025   22:47:03   (  -0.00,-136.92) (  -0.84,-140.71)  431.84                80
 06/15/2025   22:30:59   (  -0.01,-136.90) (   0.14,-136.17)   82.65                80
 06/18/2025   10:31:23   (   0.02,-136.85) (   0.06,-136.91)    8.06                80
 06/20/2025   22:34:37   (  -0.02,-136.80) (  -0.22,-137.69)  102.15                80
 06/21/2025   22:18:32   (  -0.02,-136.77) (   0.77,-133.16)  411.16                80