Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 10.  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)
 08/11/2025   10:19:09   (   0.02,-136.99) (  -0.66,-133.96)  345.31                80
 08/12/2025   22:41:05   (  -0.02,-137.00) (  -0.52,-139.27)  258.62                80
 08/13/2025   22:25:01   (  -0.02,-136.99) (   0.51,-134.74)  257.31                80
 08/15/2025   10:46:48   (   0.02,-136.97) (   0.70,-140.00)  345.30                80
 08/16/2025   10:25:24   (   0.02,-136.96) (  -0.32,-135.47)  169.96                80
 08/17/2025   22:47:19   (  -0.03,-136.95) (  -0.90,-140.77)  435.64                80
 08/18/2025   22:31:15   (  -0.03,-136.93) (   0.13,-136.24)   79.27                80
 08/21/2025   10:34:17   (   0.04,-136.89) (   0.05,-136.97)    9.88                80
 08/23/2025   22:34:48   (  -0.04,-136.85) (  -0.22,-137.74)  101.21                80