Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 6 24.  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)
 06/25/2025   22:40:55   (   0.02,-137.00) (  -0.47,-139.23)  253.48                80
 06/26/2025   22:24:51   (   0.01,-137.00) (   0.52,-134.70)  262.74                80
 06/28/2025   10:43:59   (  -0.01,-137.00) (   0.64,-139.97)  338.62                80
 06/29/2025   10:27:54   (  -0.00,-137.00) (  -0.36,-135.44)  177.65                80
 06/30/2025   22:47:12   (  -0.00,-137.00) (  -0.85,-140.74)  426.91                80
 07/01/2025   22:31:07   (  -0.00,-137.00) (   0.15,-136.21)   89.19                80
 07/04/2025   10:31:31   (   0.00,-136.98) (   0.01,-136.95)    3.16                80
 07/06/2025   22:34:45   (   0.01,-136.96) (  -0.16,-137.74)   88.07                80
 07/07/2025   22:18:40   (   0.00,-136.95) (   0.84,-133.21)  426.79                80