Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 12 1.  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)
 12/02/2025   04:04:21   (  -0.03, 140.72) (  -0.22, 139.96)   87.09                80
 12/03/2025   03:48:19   (  -0.03, 140.73) (   0.82, 144.48)  428.50                80
 12/04/2025   16:10:08   (   0.03, 140.75) (   0.40, 139.22)  175.80                80
 12/05/2025   15:48:45   (   0.03, 140.76) (  -0.63, 143.74)  339.57                80
 12/07/2025   04:10:45   (  -0.03, 140.74) (  -0.55, 138.42)  264.00                80
 12/08/2025   03:54:42   (  -0.03, 140.73) (   0.49, 142.94)  252.17                80
 12/09/2025   16:16:31   (   0.02, 140.74) (   0.73, 137.68)  350.19                80
 12/10/2025   15:55:09   (   0.02, 140.74) (  -0.31, 142.20)  166.33                80
 12/12/2025   04:17:08   (  -0.01, 140.70) (  -0.86, 136.88)  435.64                80
 12/13/2025   04:01:05   (  -0.02, 140.69) (   0.13, 141.41)   81.87                80
 12/15/2025   16:04:13   (   0.01, 140.66) (  -0.01, 140.65)    2.81                80