Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 12.  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)
 07/12/2025   22:24:57   (  -0.00,-137.00) (   0.53,-134.73)  260.08                80
 07/14/2025   10:46:45   (  -0.00,-137.00) (   0.66,-139.99)  341.52                80
 07/15/2025   10:25:20   (  -0.01,-136.99) (  -0.34,-135.46)  174.28                80
 07/16/2025   22:47:18   (   0.01,-136.99) (  -0.85,-140.77)  431.07                80
 07/17/2025   22:31:13   (   0.01,-136.98) (   0.15,-136.24)   84.41                80
 07/20/2025   10:34:17   (  -0.01,-136.95) (  -0.02,-136.98)    4.12                80
 07/22/2025   22:34:50   (   0.02,-136.91) (  -0.16,-137.76)   96.50                80
 07/23/2025   22:18:45   (   0.02,-136.89) (   0.85,-133.23)  417.85                80
 07/25/2025   10:37:53   (  -0.02,-136.86) (   0.35,-138.49)  186.28                80
 07/26/2025   10:21:48   (  -0.02,-136.84) (  -0.66,-133.96)  328.04                80