Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2024 12 18.  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)
 12/20/2024   08:28:13   (   0.01,-104.70) (   0.16,-105.26)   64.09                80
 12/21/2024   08:06:48   (   0.02,-104.70) (  -0.89,-100.73)  452.74                80
 12/22/2024   20:28:41   (  -0.02,-104.67) (  -0.33,-106.02)  154.75                80
 12/23/2024   20:12:34   (  -0.02,-104.67) (   0.66,-101.48)  362.75                80
 12/25/2024   08:34:21   (   0.02,-104.72) (   0.49,-106.75)  231.85                80
 12/26/2024   08:12:54   (   0.02,-104.72) (  -0.51,-102.21)  285.06                80
 12/27/2024   20:34:48   (  -0.03,-104.67) (  -0.68,-107.51)  323.39                80
 12/28/2024   20:18:41   (  -0.03,-104.67) (   0.32,-102.97)  193.88                80
 12/30/2024   08:40:27   (   0.04,-104.73) (   0.81,-108.24)  400.36                80
 12/31/2024   08:19:01   (   0.04,-104.72) (  -0.19,-103.70)  116.24                80