Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 14.  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)
 10/15/2025   22:40:25   (   0.02,-137.00) (  -0.47,-139.08)  237.33                80
 10/16/2025   22:24:20   (   0.02,-137.01) (   0.58,-134.55)  280.06                80
 10/18/2025   10:46:05   (  -0.02,-137.00) (   0.60,-139.81)  319.99                80
 10/19/2025   10:24:38   (  -0.02,-137.00) (  -0.39,-135.26)  197.32                80
 10/20/2025   22:46:33   (  -0.02,-137.01) (  -0.79,-140.56)  404.08                80
 10/21/2025   22:30:26   (  -0.02,-137.01) (   0.20,-136.02)  112.96                80
 10/23/2025   10:52:12   (   0.03,-136.99) (   0.96,-141.28)  487.84                80
 10/24/2025   10:30:45   (   0.02,-136.98) (  -0.04,-136.74)   28.49                80
 10/26/2025   22:33:53   (  -0.02,-136.97) (  -0.14,-137.49)   59.52                80
 10/27/2025   22:15:06   (  -0.02,-136.95) (   0.87,-132.95)  456.24                80