Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 1 8.  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)
 01/09/2025   10:31:50   (   0.01,-137.00) (   0.01,-136.89)   12.29                80
 01/11/2025   22:34:56   (  -0.01,-136.99) (  -0.14,-137.65)   75.14                80
 01/12/2025   22:18:49   (  -0.01,-136.98) (   0.85,-133.10)  441.40                80
 01/14/2025   10:40:33   (   0.01,-136.97) (   0.34,-138.36)  159.37                80
 01/15/2025   10:19:06   (   0.01,-136.96) (  -0.71,-133.83)  356.96                80
 01/16/2025   22:40:58   (  -0.01,-136.94) (  -0.51,-139.11)  247.50                80
 01/17/2025   22:24:51   (  -0.00,-136.93) (   0.54,-134.58)  268.84                80
 01/19/2025   10:46:36   (   0.00,-136.92) (   0.63,-139.84)  332.03                80
 01/20/2025   10:25:08   (   0.00,-136.90) (  -0.37,-135.29)  184.01                80
 01/21/2025   22:46:59   (  -0.00,-136.88) (  -0.84,-140.58)  421.20                80