Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 9 13.  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)
 09/14/2025   03:48:28   (   0.01, 140.74) (   0.80, 144.36)  412.24                80
 09/15/2025   16:10:15   (  -0.02, 140.84) (   0.39, 139.10)  199.32                80
 09/16/2025   15:48:49   (  -0.02, 140.87) (  -0.61, 143.63)  314.83                80
 09/18/2025   04:10:45   (   0.02, 140.83) (  -0.55, 138.33)  285.45                80
 09/19/2025   03:54:39   (   0.02, 140.85) (   0.45, 142.87)  229.87                80
 09/20/2025   16:16:26   (  -0.03, 140.92) (   0.73, 137.60)  378.79                80
 09/21/2025   15:55:01   (  -0.02, 140.93) (  -0.27, 142.14)  136.72                80
 09/23/2025   04:16:56   (   0.02, 140.89) (  -0.88, 136.83)  462.50                80
 09/24/2025   04:00:51   (   0.02, 140.90) (   0.12, 141.37)   53.85                80
 09/26/2025   16:03:53   (  -0.02, 140.96) (   0.05, 140.64)   36.63                80
 09/27/2025   15:42:27   (  -0.02, 140.97) (  -0.96, 145.17)  479.47                80