Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 9 21.  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)
 09/22/2025   10:31:25   (  -0.02,-136.99) (  -0.04,-136.93)    8.17                80
 09/24/2025   22:34:35   (   0.02,-136.99) (  -0.11,-137.69)   79.02                80
 09/25/2025   22:15:48   (   0.01,-136.99) (   0.84,-133.14)  437.32                80
 09/27/2025   10:40:16   (   0.00,-136.96) (   0.32,-138.41)  165.30                80
 09/28/2025   10:18:50   (  -0.00,-136.95) (  -0.70,-133.88)  350.09                80
 09/29/2025   22:43:25   (  -0.00,-136.94) (  -0.52,-139.17)  254.88                80
 09/30/2025   22:24:39   (   0.00,-136.92) (   0.50,-134.63)  260.11                80
 10/02/2025   10:46:26   (  -0.00,-136.88) (   0.65,-139.91)  343.88                80
 10/03/2025   10:25:01   (  -0.01,-136.86) (  -0.37,-135.37)  170.78                80
 10/04/2025   22:46:55   (   0.00,-136.84) (  -0.84,-140.66)  435.22                80