Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 22.  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)
 09/24/2025   22:34:35   (   0.02,-137.01) (  -0.10,-137.69)   77.04                80
 09/25/2025   22:15:49   (   0.02,-137.01) (   0.91,-133.16)  439.65                80
 09/27/2025   10:40:16   (  -0.01,-136.99) (   0.31,-138.41)  161.83                80
 09/28/2025   10:18:50   (  -0.01,-136.99) (  -0.71,-133.88)  354.19                80
 09/29/2025   22:43:25   (   0.01,-136.98) (  -0.51,-139.17)  250.05                80
 09/30/2025   22:21:59   (   0.01,-136.97) (   0.51,-134.64)  265.54                80
 10/02/2025   10:46:26   (  -0.01,-136.94) (   0.63,-139.91)  337.33                80
 10/03/2025   10:25:01   (  -0.01,-136.93) (  -0.39,-135.37)  177.94                80
 10/04/2025   22:49:35   (   0.01,-136.91) (  -0.82,-140.67)  427.34                80
 10/05/2025   22:28:10   (   0.01,-136.90) (   0.20,-136.13)   87.83                80