Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 6 17.  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)
 06/19/2025   04:16:57   (  -0.00, 140.76) (  -0.88, 136.82)  448.89                80
 06/20/2025   04:00:53   (   0.00, 140.76) (   0.11, 141.36)   67.61                80
 06/22/2025   16:03:58   (  -0.01, 140.75) (   0.01, 140.60)   16.42                80
 06/25/2025   04:04:30   (   0.00, 140.74) (  -0.22, 139.83)  104.09                80
 06/26/2025   03:48:27   (  -0.00, 140.73) (   0.83, 144.35)  413.09                80
 06/27/2025   16:10:14   (   0.01, 140.72) (   0.38, 139.09)  185.48                80
 06/28/2025   15:48:51   (   0.01, 140.70) (  -0.67, 143.61)  332.10                80
 06/30/2025   04:10:48   (  -0.01, 140.68) (  -0.53, 138.30)  270.57                80
 07/01/2025   03:54:44   (  -0.01, 140.66) (   0.47, 142.84)  247.87                80