Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 13.  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)
 04/14/2025   10:52:11   (  -0.00,-137.00) (   0.95,-141.29)  488.50                80
 04/15/2025   10:30:44   (   0.00,-137.00) (  -0.05,-136.75)   28.61                80
 04/17/2025   22:33:51   (   0.00,-136.99) (  -0.14,-137.50)   58.28                80
 04/18/2025   22:17:46   (   0.00,-136.99) (   0.93,-132.97)  458.20                80
 04/20/2025   10:39:30   (  -0.00,-136.97) (   0.30,-138.22)  143.13                80
 04/21/2025   10:18:04   (  -0.00,-136.96) (  -0.71,-133.68)  372.97                80
 04/22/2025   22:39:57   (   0.00,-136.94) (  -0.46,-138.98)  231.64                80
 04/23/2025   22:23:50   (   0.00,-136.93) (   0.56,-134.44)  284.27                80
 04/25/2025   10:45:36   (  -0.00,-136.91) (   0.61,-139.70)  317.79                80
 04/26/2025   10:24:09   (  -0.01,-136.89) (  -0.41,-135.16)  197.64                80