Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 3 16.  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)
 03/18/2025   16:03:47   (   0.01, 140.76) (   0.04, 140.70)    7.95                80
 03/21/2025   04:04:18   (  -0.01, 140.78) (  -0.23, 139.93)   97.67                80
 03/22/2025   03:48:14   (  -0.01, 140.78) (   0.83, 144.45)  418.76                80
 03/23/2025   16:10:00   (   0.01, 140.77) (   0.35, 139.18)  180.29                80
 03/24/2025   15:48:34   (   0.01, 140.77) (  -0.65, 143.72)  336.27                80
 03/26/2025   04:10:30   (  -0.02, 140.78) (  -0.56, 138.42)  268.71                80
 03/27/2025   03:54:24   (  -0.02, 140.77) (   0.45, 142.96)  248.56                80
 03/28/2025   16:16:10   (   0.02, 140.75) (   0.72, 137.69)  348.85                80
 03/29/2025   15:54:45   (   0.01, 140.74) (  -0.30, 142.22)  168.61                80