Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 11 27.  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)
 11/27/2025   22:35:45   (  -0.01,-137.01) (   0.00,-137.59)   65.49                 0
 11/28/2025   22:18:19   (  -0.01,-137.00) (   0.86,-133.03)  452.02                80
 11/30/2025   10:40:10   (   0.02,-136.99) (   0.31,-138.31)  150.35                80
 12/01/2025   10:18:47   (   0.02,-136.99) (  -0.73,-133.79)  364.69                80
 12/02/2025   22:40:47   (  -0.02,-136.98) (  -0.47,-139.10)  241.95                80
 12/03/2025   22:24:43   (  -0.02,-136.96) (   0.51,-134.57)  272.57                80
 12/05/2025   10:46:33   (   0.03,-136.94) (   0.65,-139.85)  331.52                80
 12/06/2025   10:25:10   (   0.02,-136.92) (  -0.33,-135.32)  182.33                80
 12/07/2025   22:47:09   (  -0.03,-136.90) (  -0.85,-140.63)  425.75                80
 12/08/2025   22:31:06   (  -0.02,-136.88) (   0.14,-136.10)   88.07                80
 12/11/2025   10:34:13   (   0.02,-136.83) (   0.04,-136.85)    3.14                80