Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 3 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)
 03/27/2025   22:28:06   (  -0.00,-137.00) (   0.19,-136.09)  102.72                80
 03/29/2025   10:52:33   (   0.00,-136.99) (   0.96,-141.36)  497.68                80
 03/30/2025   10:31:06   (  -0.00,-136.99) (  -0.01,-136.82)   19.07                80
 04/01/2025   22:34:16   (   0.01,-136.98) (  -0.11,-137.59)   69.70                80
 04/02/2025   22:18:10   (   0.01,-136.97) (   0.87,-133.05)  446.10                80
 04/04/2025   10:39:55   (  -0.01,-136.95) (   0.32,-138.31)  156.06                80
 04/05/2025   10:18:29   (  -0.01,-136.93) (  -0.72,-133.78)  359.58                80
 04/06/2025   22:40:24   (   0.00,-136.92) (  -0.46,-139.08)  245.60                80
 04/07/2025   22:24:17   (   0.00,-136.90) (   0.54,-134.54)  270.06                80
 04/09/2025   10:46:02   (   0.00,-136.88) (   0.65,-139.80)  332.24                80
 04/10/2025   10:24:36   (   0.00,-136.87) (  -0.35,-135.26)  183.26                80