Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 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)
 07/20/2025   10:33:51   (  -0.00,-136.99) (   0.02,-136.97)    3.39                55
 07/22/2025   22:34:49   (  -0.01,-136.98) (  -0.20,-137.75)   87.65                80
 07/23/2025   22:18:44   (  -0.01,-136.97) (   0.81,-133.22)  427.69                80
 07/25/2025   10:40:32   (   0.02,-136.94) (   0.39,-138.48)  175.78                80
 07/26/2025   10:19:07   (   0.02,-136.93) (  -0.62,-133.95)  339.45                80
 07/27/2025   22:41:05   (  -0.02,-136.93) (  -0.55,-139.26)  265.64                80
 07/28/2025   22:25:00   (  -0.02,-136.92) (   0.47,-134.73)  249.50                80
 07/30/2025   10:46:47   (   0.03,-136.89) (   0.74,-140.00)  354.37                80
 07/31/2025   10:25:23   (   0.03,-136.88) (  -0.28,-135.46)  160.38                80
 08/01/2025   22:47:20   (  -0.03,-136.86) (  -0.88,-140.78)  445.66                80