Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 1.  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)
 05/03/2025   22:33:55   (   0.00,-136.99) (  -0.10,-137.53)   60.82                80
 05/04/2025   22:17:52   (   0.00,-136.99) (   0.91,-133.00)  454.56                80
 05/06/2025   10:37:02   (  -0.00,-136.98) (   0.27,-138.28)  147.99                80
 05/07/2025   10:20:59   (  -0.00,-136.97) (  -0.74,-133.76)  367.32                80
 05/08/2025   22:40:16   (   0.00,-136.97) (  -0.46,-139.06)  238.77                80
 05/09/2025   22:24:13   (   0.00,-136.96) (   0.56,-134.54)  276.22                80
 05/11/2025   10:43:22   (  -0.00,-136.94) (   0.66,-139.81)  327.26                80
 05/12/2025   10:27:18   (  -0.01,-136.93) (  -0.35,-135.28)  187.20                80
 05/13/2025   22:46:36   (   0.01,-136.91) (  -0.83,-140.59)  420.40                80
 05/14/2025   22:30:32   (   0.02,-136.89) (   0.19,-136.07)   93.51                80