Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 30.  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)
 08/31/2025   10:46:46   (  -0.03,-136.98) (   0.66,-140.00)  343.96                80
 09/01/2025   10:25:22   (  -0.03,-136.97) (  -0.38,-135.47)  171.52                80
 09/02/2025   22:47:17   (   0.04,-136.96) (  -0.80,-140.77)  433.97                80
 09/03/2025   22:31:12   (   0.04,-136.95) (   0.18,-136.23)   81.22                80
 09/06/2025   10:34:14   (  -0.04,-136.91) (  -0.03,-136.97)    7.18                80
 09/08/2025   22:34:44   (   0.04,-136.87) (  -0.14,-137.73)   98.66                80
 09/09/2025   22:18:39   (   0.04,-136.85) (   0.85,-133.20)  415.89                80
 09/11/2025   10:40:26   (  -0.04,-136.81) (   0.34,-138.46)  188.65                80
 09/12/2025   10:19:01   (  -0.05,-136.79) (  -0.66,-133.93)  325.22                80