Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 16.  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)
 07/16/2025   22:47:18   (   0.02,-137.01) (  -0.82,-140.77)  428.56                80
 07/17/2025   22:31:14   (   0.02,-137.01) (   0.19,-136.24)   87.64                80
 07/20/2025   10:31:37   (  -0.03,-136.99) (   0.00,-136.98)    3.31                80
 07/22/2025   22:34:50   (   0.04,-136.98) (  -0.12,-137.77)   89.53                80
 07/23/2025   22:18:46   (   0.04,-136.97) (   0.89,-133.24)  425.58                80
 07/25/2025   10:37:53   (  -0.04,-136.94) (   0.30,-138.50)  177.82                80
 07/26/2025   10:21:49   (  -0.04,-136.93) (  -0.70,-133.97)  337.26                80
 07/27/2025   22:41:06   (   0.05,-136.92) (  -0.46,-139.28)  268.63                80
 07/28/2025   22:25:02   (   0.05,-136.91) (   0.55,-134.75)  246.46                80
 07/30/2025   10:44:09   (  -0.05,-136.88) (   0.65,-140.01)  357.25                80