Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 27.  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)
 07/27/2025   22:41:05   (  -0.02,-137.00) (  -0.52,-139.27)  257.84                80
 07/28/2025   22:25:01   (  -0.02,-137.00) (   0.50,-134.74)  258.28                80
 07/30/2025   10:46:48   (   0.02,-136.99) (   0.70,-140.00)  343.66                80
 07/31/2025   10:25:23   (   0.02,-136.98) (  -0.32,-135.47)  172.06                80
 08/01/2025   22:47:20   (  -0.02,-136.98) (  -0.90,-140.77)  432.98                80
 08/02/2025   22:31:15   (  -0.03,-136.97) (   0.12,-136.24)   82.36                80
 08/05/2025   10:34:18   (   0.04,-136.92) (   0.06,-136.98)    6.33                80
 08/07/2025   22:34:50   (  -0.05,-136.89) (  -0.23,-137.75)   98.23                80
 08/08/2025   22:18:45   (  -0.05,-136.87) (   0.79,-133.22)  416.09                80
 08/10/2025   10:40:33   (   0.05,-136.83) (   0.42,-138.48)  188.62                80