Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 6 15.  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)
 06/16/2025   16:16:24   (  -0.02, 140.76) (   0.71, 137.60)  360.49                80
 06/17/2025   15:55:00   (  -0.02, 140.76) (  -0.34, 142.12)  156.44                80
 06/19/2025   04:16:58   (   0.02, 140.74) (  -0.86, 136.82)  446.99                80
 06/20/2025   04:00:54   (   0.02, 140.73) (   0.19, 141.34)   70.46                80
 06/22/2025   16:03:58   (  -0.03, 140.70) (  -0.01, 140.60)   11.48                80
 06/25/2025   04:04:32   (   0.04, 140.67) (  -0.14, 139.81)   97.16                80
 06/26/2025   03:48:27   (   0.03, 140.65) (   0.86, 144.35)  420.86                80
 06/27/2025   16:10:16   (  -0.04, 140.63) (   0.30, 139.07)  176.80                80
 06/28/2025   15:48:51   (  -0.03, 140.61) (  -0.70, 143.60)  341.73                80