Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 26.  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)
 06/26/2025   22:24:51   (   0.01,-137.00) (   0.53,-134.70)  262.74                80
 06/28/2025   10:43:59   (  -0.02,-137.00) (   0.62,-139.97)  338.88                80
 06/29/2025   10:27:55   (  -0.01,-136.99) (  -0.37,-135.44)  177.25                80
 06/30/2025   22:47:12   (   0.01,-137.00) (  -0.84,-140.75)  427.42                80
 07/01/2025   22:31:08   (   0.01,-137.00) (   0.16,-136.21)   88.58                80
 07/04/2025   10:31:31   (  -0.01,-136.98) (  -0.01,-136.96)    2.26                80
 07/06/2025   22:34:45   (   0.02,-136.96) (  -0.14,-137.74)   88.95                80
 07/07/2025   22:18:41   (   0.02,-136.95) (   0.86,-133.21)  425.88                80
 07/09/2025   10:37:48   (  -0.02,-136.91) (   0.35,-138.47)  178.08                80
 07/10/2025   10:21:44   (  -0.02,-136.90) (  -0.65,-133.94)  336.32                80