Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 4.  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)
 10/04/2025   22:46:54   (   0.02,-137.00) (  -0.80,-140.66)  416.81                80
 10/05/2025   22:30:49   (   0.02,-137.00) (   0.23,-136.13)  100.24                80
 10/08/2025   10:31:08   (   0.03,-136.99) (   0.01,-136.84)   16.98                80
 10/10/2025   22:34:17   (  -0.02,-136.97) (  -0.15,-137.60)   71.54                80
 10/11/2025   22:18:10   (  -0.02,-136.96) (   0.84,-133.06)  444.05                80
 10/13/2025   10:39:55   (   0.02,-136.93) (   0.35,-138.31)  158.52                80
 10/14/2025   10:18:30   (   0.01,-136.91) (  -0.70,-133.78)  356.82                80
 10/15/2025   22:40:24   (  -0.02,-136.89) (  -0.48,-139.08)  248.39                80
 10/16/2025   22:21:38   (  -0.02,-136.88) (   0.52,-134.54)  267.13                80
 10/18/2025   10:46:02   (   0.02,-136.85) (   0.71,-139.78)  335.13                80