Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between HIMAWARI-9 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 3/31/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/01/2025 04:00:32 -0.02, 140.77 0.11, 141.47 79.12 80
2 04/03/2025 16:03:32 0.03, 140.79 0.05, 140.74 5.48 80
3 04/06/2025 04:04:01 -0.04, 140.78 -0.22, 139.98 91.11 80
4 04/07/2025 03:47:55 -0.04, 140.77 0.77, 144.52 426.49 80
5 04/08/2025 16:09:41 0.04, 140.77 0.37, 139.25 172.31 80
6 04/09/2025 15:48:14 0.04, 140.76 -0.62, 143.79 345.73 80
7 04/11/2025 04:10:09 -0.05, 140.73 -0.55, 138.50 255.15 80
8 04/12/2025 03:54:03 -0.04, 140.72 0.50, 143.02 263.57 80
9 04/13/2025 16:15:49 0.04, 140.69 0.69, 137.77 333.65 80
10 04/14/2025 15:54:22 0.04, 140.68 -0.31, 142.31 185.13 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 3/31/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250401.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 03/31/2025 in txt file.

Historical Predications of SNOs between HIMAWARI-9 and NOAA-21