Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2024 12 21.  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)
 12/21/2024   08:06:47   (   0.00,-104.70) (  -0.87,-100.73)  452.10                80
 12/22/2024   20:28:42   (   0.01,-104.66) (  -0.29,-106.03)  155.62                80
 12/23/2024   20:12:35   (   0.01,-104.67) (   0.70,-101.49)  361.66                80
 12/25/2024   08:34:22   (   0.01,-104.71) (   0.45,-106.76)  232.83                80
 12/26/2024   08:12:55   (   0.02,-104.71) (  -0.55,-102.22)  284.06                80
 12/27/2024   20:34:48   (  -0.02,-104.67) (  -0.65,-107.51)  324.49                80
 12/28/2024   20:18:42   (  -0.02,-104.67) (   0.35,-102.97)  192.56                80
 12/30/2024   08:40:28   (   0.02,-104.71) (   0.79,-108.25)  402.26                80
 12/31/2024   08:19:02   (   0.02,-104.71) (  -0.22,-103.71)  114.21                80
 01/01/2025   20:40:54   (  -0.02,-104.65) (  -1.01,-108.99)  495.39                80
 01/02/2025   20:24:49   (  -0.01,-104.65) (   0.06,-104.47)   21.64                80