Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 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)
 07/01/2025   22:31:08   (   0.00,-137.01) (   0.18,-136.22)   90.10                80
 07/04/2025   10:34:12   (  -0.01,-137.01) (  -0.03,-136.96)    5.44                80
 07/06/2025   22:34:44   (   0.02,-137.00) (  -0.17,-137.73)   84.45                80
 07/07/2025   22:18:41   (   0.02,-136.99) (   0.88,-133.21)  431.04                80
 07/09/2025   10:37:48   (  -0.02,-136.97) (   0.32,-138.48)  171.50                80
 07/10/2025   10:21:44   (  -0.02,-136.96) (  -0.68,-133.95)  343.43                80
 07/11/2025   22:41:01   (   0.01,-136.94) (  -0.51,-139.25)  263.48                80
 07/12/2025   22:24:57   (   0.01,-136.93) (   0.49,-134.72)  251.29                80
 07/14/2025   10:44:04   (  -0.01,-136.90) (   0.71,-139.99)  352.12                80
 07/15/2025   10:28:00   (  -0.00,-136.88) (  -0.30,-135.45)  162.43                80