Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 1 17.  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)
 01/17/2025   22:24:51   (   0.00,-137.01) (   0.55,-134.58)  277.10                80
 01/19/2025   10:46:36   (  -0.00,-137.02) (   0.62,-139.84)  321.39                80
 01/20/2025   10:25:08   (  -0.00,-137.02) (  -0.38,-135.29)  196.75                80
 01/21/2025   22:47:00   (   0.01,-137.03) (  -0.78,-140.59)  404.72                80
 01/22/2025   22:30:53   (   0.01,-137.04) (   0.23,-136.04)  112.98                80
 01/24/2025   10:52:37   (  -0.01,-137.03) (   0.92,-141.31)  486.83                80
 01/25/2025   10:33:50   (  -0.01,-137.03) (  -0.10,-136.77)   30.39                80
 01/27/2025   22:34:14   (   0.02,-137.01) (  -0.09,-137.51)   56.28                80
 01/28/2025   22:18:06   (   0.02,-137.00) (   0.93,-132.97)  460.28                80
 01/30/2025   10:37:09   (  -0.03,-136.98) (   0.26,-138.22)  140.97                80
 01/31/2025   10:21:02   (  -0.03,-136.97) (  -0.77,-133.68)  375.44                80