Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 16.  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)
 06/18/2025   10:31:23   (  -0.00,-137.00) (  -0.00,-136.92)    8.62                80
 06/20/2025   22:34:37   (   0.01,-137.00) (  -0.15,-137.71)   80.53                80
 06/21/2025   22:18:33   (   0.01,-136.99) (   0.84,-133.17)  434.92                80
 06/23/2025   10:37:41   (  -0.02,-136.98) (   0.33,-138.45)  167.97                80
 06/24/2025   10:21:37   (  -0.02,-136.96) (  -0.67,-133.91)  347.06                80
 06/25/2025   22:40:55   (   0.01,-136.95) (  -0.47,-139.23)  259.53                80
 06/26/2025   22:24:50   (   0.01,-136.94) (   0.52,-134.70)  255.41                80
 06/28/2025   10:43:58   (  -0.01,-136.91) (   0.69,-139.96)  347.89                80
 06/29/2025   10:27:53   (  -0.00,-136.90) (  -0.30,-135.43)  167.04                80