Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 11 19.  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)
 11/20/2025   10:24:41   (   0.02,-137.01) (  -0.39,-135.23)  202.46                80
 11/21/2025   22:49:21   (  -0.01,-137.01) (  -0.78,-140.55)  403.10                80
 11/22/2025   22:27:58   (  -0.01,-137.01) (   0.18,-136.02)  112.16                80
 11/24/2025   10:52:28   (   0.01,-137.00) (   0.99,-141.30)  490.60                80
 11/25/2025   10:31:06   (  -0.00,-136.99) (  -0.04,-136.78)   24.20                80
 11/27/2025   22:37:02   (   0.01,-136.98) (  -0.15,-137.56)   67.69                80
 11/28/2025   22:15:40   (   0.01,-136.97) (   0.88,-133.04)  446.92                80
 11/30/2025   10:40:10   (  -0.00,-136.94) (   0.29,-138.32)  156.68                80
 12/01/2025   10:18:48   (  -0.01,-136.93) (  -0.74,-133.80)  357.46                80
 12/02/2025   22:43:26   (  -0.01,-136.91) (  -0.52,-139.10)  250.21                80