Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 9 20.  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)
 09/21/2025   15:55:02   (  -0.04, 140.81) (  -0.32, 142.13)  149.73                80
 09/23/2025   04:16:57   (   0.04, 140.76) (  -0.84, 136.83)  448.20                80
 09/24/2025   04:00:52   (   0.04, 140.76) (   0.17, 141.36)   68.78                80
 09/26/2025   16:03:53   (  -0.04, 140.81) (  -0.01, 140.63)   20.34                80
 09/27/2025   15:42:28   (  -0.04, 140.81) (  -1.02, 145.16)  496.50                80
 09/29/2025   04:04:23   (   0.04, 140.75) (  -0.13, 139.86)  101.01                80
 09/30/2025   03:48:18   (   0.04, 140.75) (   0.88, 144.40)  416.48                80
 10/01/2025   16:10:04   (  -0.05, 140.79) (   0.33, 139.14)  188.15                80
 10/02/2025   15:48:39   (  -0.05, 140.78) (  -0.68, 143.67)  329.29                80
 10/04/2025   04:10:34   (   0.06, 140.72) (  -0.47, 138.37)  267.80                80