Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 12 23.  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)
 12/24/2024   10:32:22   (   0.00,-137.01) (   0.01,-136.99)    1.47                80
 12/26/2024   22:35:30   (  -0.01,-137.01) (  -0.16,-137.76)   85.40                80
 12/27/2024   22:19:23   (  -0.01,-137.00) (   0.84,-133.22)  431.08                80
 12/29/2024   10:41:09   (   0.01,-136.98) (   0.35,-138.48)  170.70                80
 12/30/2024   10:19:42   (   0.02,-136.97) (  -0.65,-133.94)  345.17                80
 12/31/2024   22:41:36   (  -0.02,-136.96) (  -0.53,-139.24)  259.72                80
 01/01/2025   22:25:29   (  -0.02,-136.94) (   0.48,-134.70)  255.80                80
 01/03/2025   10:47:14   (   0.02,-136.92) (   0.71,-139.96)  347.05                80
 01/04/2025   10:25:48   (   0.02,-136.90) (  -0.31,-135.42)  168.13                80
 01/05/2025   22:47:40   (  -0.02,-136.87) (  -0.91,-140.71)  437.57                80