Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 17.  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   10:34:04   (  -0.00,-137.00) (  -0.01,-136.92)    8.76                80
 06/20/2025   22:34:37   (   0.01,-137.01) (  -0.14,-137.71)   79.49                80
 06/21/2025   22:18:33   (   0.01,-137.00) (   0.85,-133.17)  436.17                80
 06/23/2025   10:37:41   (  -0.02,-136.99) (   0.32,-138.45)  166.59                80
 06/24/2025   10:21:37   (  -0.02,-136.98) (  -0.68,-133.91)  348.64                80
 06/25/2025   22:40:55   (   0.01,-136.97) (  -0.47,-139.23)  257.42                80
 06/26/2025   22:24:51   (   0.01,-136.96) (   0.53,-134.70)  257.73                80
 06/28/2025   10:43:58   (  -0.01,-136.93) (   0.69,-139.96)  345.48                80
 06/29/2025   10:27:53   (  -0.00,-136.92) (  -0.31,-135.43)  169.66                80
 06/30/2025   22:47:12   (   0.00,-136.91) (  -0.83,-140.75)  436.67                80