Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 10 31.  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)
 10/31/2025   22:39:59   (   0.00,-137.04) (  -0.44,-138.96)  218.47                80
 11/01/2025   22:23:53   (   0.00,-137.06) (   0.57,-134.42)  300.33                80
 11/03/2025   10:45:37   (  -0.00,-137.07) (   0.61,-139.67)  297.17                80
 11/04/2025   10:24:11   (   0.00,-137.08) (  -0.41,-135.13)  221.11                80
 11/05/2025   22:46:05   (  -0.00,-137.09) (  -0.76,-140.43)  380.77                80
 11/06/2025   22:29:58   (  -0.00,-137.09) (   0.26,-135.89)  136.93                80
 11/08/2025   10:51:43   (   0.00,-137.09) (   0.91,-141.14)  462.15                80
 11/09/2025   10:30:16   (   0.01,-137.09) (  -0.11,-136.61)   55.03                80
 11/11/2025   22:33:24   (   0.02,-137.08) (  -0.02,-137.37)   31.77                80
 11/12/2025   22:17:17   (   0.02,-137.08) (   0.95,-132.81)  485.48                80
 11/14/2025   10:39:01   (  -0.02,-137.07) (   0.21,-138.07)  113.97                80