Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 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)
 05/16/2025   15:54:34   (   0.02, 140.77) (  -0.30, 142.24)  167.78                80
 05/18/2025   04:16:32   (  -0.02, 140.78) (  -0.89, 136.94)  437.83                80
 05/19/2025   04:00:28   (  -0.02, 140.77) (   0.13, 141.46)   78.61                80
 05/21/2025   16:00:54   (   0.03, 140.75) (   0.05, 140.71)    4.70                80
 05/24/2025   04:04:08   (  -0.02, 140.74) (  -0.21, 139.93)   92.04                80
 05/25/2025   03:48:04   (  -0.02, 140.72) (   0.81, 144.45)  425.09                80
 05/26/2025   16:07:14   (   0.01, 140.70) (   0.38, 139.18)  173.86                80
 05/27/2025   15:48:30   (   0.01, 140.69) (  -0.65, 143.70)  343.32                80
 05/29/2025   04:10:27   (  -0.01, 140.68) (  -0.53, 138.39)  260.88                80