Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 6 18.  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) (  -0.87, 136.82)  448.78                80
 06/20/2025   04:00:53   (   0.00, 140.76) (   0.12, 141.35)   67.70                80
 06/22/2025   16:03:58   (  -0.01, 140.75) (  -0.00, 140.60)   16.53                80
 06/25/2025   04:04:31   (   0.00, 140.74) (  -0.21, 139.83)  103.77                80
 06/26/2025   03:48:26   (  -0.00, 140.73) (   0.78, 144.36)  413.43                80
 06/27/2025   16:10:14   (   0.01, 140.71) (   0.37, 139.09)  185.24                80
 06/28/2025   15:48:50   (   0.01, 140.70) (  -0.62, 143.62)  332.37                80
 06/30/2025   04:10:48   (  -0.01, 140.68) (  -0.52, 138.30)  270.11                80
 07/01/2025   03:54:44   (  -0.01, 140.66) (   0.48, 142.84)  248.36                80
 07/02/2025   16:16:32   (   0.02, 140.62) (   0.68, 137.56)  348.06                80