Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2024 12 19.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2024   04:11:46   (  -0.01, 140.75) (  -0.56, 138.25)  285.39                80
 12/21/2024   03:55:40   (  -0.00, 140.75) (   0.43, 142.79)  232.12                80
 12/22/2024   16:17:26   (   0.00, 140.74) (   0.73, 137.52)  366.78                80
 12/23/2024   15:55:59   (   0.00, 140.73) (  -0.26, 142.06)  151.18                80
 12/25/2024   04:17:54   (  -0.00, 140.71) (  -0.88, 136.75)  450.60                80
 12/26/2024   04:01:47   (  -0.01, 140.70) (   0.11, 141.29)   67.77                80
 12/28/2024   16:04:47   (   0.00, 140.66) (   0.04, 140.56)   11.74                80
 12/31/2024   04:05:15   (   0.00, 140.63) (  -0.16, 139.79)   94.55                80
 01/01/2025   03:49:08   (   0.01, 140.61) (   0.85, 144.33)  424.32                80