Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2024 12 25.  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)
 12/26/2024   04:01:47   (  -0.02, 140.76) (   0.13, 141.29)   61.03                80
 12/28/2024   16:04:46   (   0.02, 140.76) (   0.06, 140.57)   21.45                80
 12/29/2024   15:43:20   (   0.02, 140.76) (  -0.94, 145.11)  495.65                80
 12/31/2024   04:05:13   (  -0.02, 140.76) (  -0.23, 139.81)  107.55                80
 01/01/2025   03:49:07   (  -0.01, 140.75) (   0.78, 144.35)  409.94                80
 01/02/2025   16:10:52   (   0.01, 140.74) (   0.40, 139.09)  188.52                80
 01/03/2025   15:49:25   (   0.00, 140.73) (  -0.62, 143.62)  329.26                80
 01/05/2025   04:13:59   (  -0.00, 140.72) (  -0.53, 138.33)  272.74                80
 01/06/2025   03:52:32   (   0.00, 140.71) (   0.50, 142.86)  245.75                80
 01/07/2025   16:16:58   (  -0.00, 140.68) (   0.67, 137.60)  350.87                80