Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 8 17.  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   22:47:21   (   0.01,-136.99) (  -0.82,-140.78)  431.92                80
 08/18/2025   22:31:15   (   0.02,-136.98) (   0.15,-136.24)   83.41                80
 08/21/2025   10:34:19   (  -0.02,-136.93) (  -0.03,-136.99)    6.62                80
 08/23/2025   22:34:50   (   0.02,-136.92) (  -0.15,-137.76)   94.94                80
 08/24/2025   22:18:44   (   0.01,-136.91) (   0.83,-133.22)  420.32                80
 08/26/2025   10:40:33   (  -0.01,-136.87) (   0.32,-138.49)  184.35                80
 08/27/2025   10:19:07   (  -0.02,-136.86) (  -0.65,-133.95)  330.47                80
 08/28/2025   22:41:02   (   0.02,-136.85) (  -0.55,-139.25)  274.87                80
 08/29/2025   22:24:58   (   0.02,-136.83) (   0.49,-134.73)  239.49                80
 08/31/2025   10:46:45   (  -0.02,-136.78) (   0.73,-139.99)  366.62                80