Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 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)
 10/20/2025   22:46:33   (   0.02,-137.00) (  -0.80,-140.55)  405.79                80
 10/21/2025   22:27:47   (   0.01,-137.00) (   0.25,-136.03)  111.24                80
 10/23/2025   10:52:11   (   0.01,-136.98) (   0.96,-141.27)  489.67                80
 10/24/2025   10:30:45   (   0.01,-136.97) (  -0.04,-136.73)   26.47                80
 10/26/2025   22:36:33   (  -0.01,-136.94) (  -0.13,-137.49)   62.04                80
 10/27/2025   22:15:06   (  -0.00,-136.93) (   0.87,-132.95)  453.47                80
 10/29/2025   10:39:31   (   0.01,-136.89) (   0.32,-138.20)  149.15                80
 10/30/2025   10:18:04   (   0.00,-136.87) (  -0.69,-133.66)  366.03                80
 10/31/2025   22:42:38   (  -0.01,-136.85) (  -0.48,-138.95)  239.38                80
 11/01/2025   22:21:12   (  -0.01,-136.83) (   0.54,-134.41)  275.70                80