Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 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)
 08/17/2025   22:47:20   (   0.01,-136.99) (  -0.84,-140.78)  431.66                80
 08/18/2025   22:31:16   (   0.00,-136.98) (   0.19,-136.25)   83.82                80
 08/21/2025   10:34:18   (   0.00,-136.94) (  -0.01,-136.99)    5.57                80
 08/23/2025   22:34:49   (  -0.01,-136.93) (  -0.17,-137.75)   93.90                80
 08/24/2025   22:18:44   (  -0.01,-136.91) (   0.81,-133.21)  421.38                80
 08/26/2025   10:40:32   (   0.01,-136.88) (   0.35,-138.49)  183.06                80
 08/27/2025   10:19:07   (   0.01,-136.87) (  -0.62,-133.95)  331.80                80
 08/28/2025   22:41:03   (  -0.01,-136.85) (  -0.51,-139.26)  273.44                80
 08/29/2025   22:24:58   (  -0.01,-136.84) (   0.46,-134.72)  241.03                80