Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 20.  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)
 10/20/2025   22:49:13   (   0.02,-137.01) (  -0.80,-140.56)  405.04                80
 10/21/2025   22:27:47   (   0.01,-137.01) (   0.26,-136.03)  112.57                80
 10/23/2025   10:52:11   (   0.00,-137.00) (   0.96,-141.27)  487.09                80
 10/24/2025   10:30:45   (   0.00,-137.00) (  -0.05,-136.73)   29.72                80
 10/26/2025   22:36:33   (  -0.01,-136.99) (  -0.13,-137.49)   57.43                80
 10/27/2025   22:15:06   (  -0.00,-136.98) (   0.88,-132.95)  458.72                80
 10/29/2025   10:39:31   (   0.01,-136.95) (   0.32,-138.20)  142.70                80
 10/30/2025   10:18:05   (   0.00,-136.94) (  -0.76,-133.67)  373.14                80
 10/31/2025   22:42:38   (  -0.01,-136.93) (  -0.47,-138.95)  231.50                80
 11/01/2025   22:21:12   (  -0.00,-136.91) (   0.55,-134.42)  284.20                80
 11/03/2025   10:45:36   (   0.02,-136.88) (   0.63,-139.67)  317.73                80