Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2024 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2024   08:40:51   (   0.02,-104.71) (   0.81,-108.31)  409.77                80
 12/15/2024   08:19:24   (   0.02,-104.70) (  -0.16,-103.76)  106.61                80
 12/17/2024   20:25:13   (  -0.01,-104.66) (   0.01,-104.53)   14.93                80
 12/20/2024   08:28:14   (  -0.01,-104.71) (   0.11,-105.27)   63.43                80
 12/21/2024   08:06:49   (  -0.01,-104.72) (  -0.93,-100.74)  453.39                80
 12/22/2024   20:28:42   (   0.01,-104.68) (  -0.29,-106.03)  154.23                80
 12/23/2024   20:12:35   (   0.02,-104.69) (   0.70,-101.49)  363.36                80
 12/25/2024   08:34:22   (  -0.01,-104.74) (   0.46,-106.76)  230.54                80
 12/26/2024   08:12:56   (  -0.01,-104.74) (  -0.59,-102.24)  286.52                80