Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 20.  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)
 06/20/2025   22:34:37   (  -0.00,-137.01) (  -0.17,-137.70)   79.19                80
 06/21/2025   22:18:33   (   0.00,-137.01) (   0.88,-133.18)  436.50                80
 06/23/2025   10:37:42   (  -0.01,-136.99) (   0.29,-138.45)  166.38                80
 06/24/2025   10:21:37   (  -0.01,-136.98) (  -0.70,-133.92)  348.92                80
 06/25/2025   22:40:55   (   0.01,-136.97) (  -0.50,-139.22)  256.92                80
 06/26/2025   22:24:50   (   0.01,-136.96) (   0.49,-134.69)  258.28                80
 06/28/2025   10:43:58   (  -0.00,-136.94) (   0.67,-139.97)  344.99                80
 06/29/2025   10:27:54   (   0.00,-136.93) (  -0.33,-135.43)  170.19                80
 06/30/2025   22:47:11   (  -0.00,-136.92) (  -0.88,-140.74)  435.87                80
 07/01/2025   22:31:07   (  -0.01,-136.91) (   0.12,-136.21)   79.21                80
 07/04/2025   10:31:31   (   0.00,-136.86) (   0.04,-136.95)   10.21                80