Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 10.  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)
 07/11/2025   22:41:02   (   0.03,-137.00) (  -0.45,-139.26)  257.34                80
 07/12/2025   22:24:58   (   0.03,-137.00) (   0.55,-134.73)  258.50                80
 07/14/2025   10:44:05   (  -0.04,-136.99) (   0.65,-140.00)  343.06                80
 07/15/2025   10:28:01   (  -0.03,-136.98) (  -0.35,-135.46)  172.53                80
 07/16/2025   22:47:18   (   0.04,-136.97) (  -0.84,-140.77)  433.82                80
 07/17/2025   22:31:14   (   0.04,-136.96) (   0.22,-136.25)   81.39                80
 07/20/2025   10:31:37   (  -0.05,-136.92) (  -0.03,-136.99)    7.15                80
 07/22/2025   22:34:50   (   0.06,-136.88) (  -0.15,-137.76)  101.28                80
 07/23/2025   22:18:46   (   0.06,-136.86) (   0.86,-133.23)  412.75                80