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: 10/27/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/28/2025 16:00:30 -0.02, 140.76 -0.05, 140.83 8.88 80
2 10/31/2025 04:03:38 0.02, 140.79 -0.12, 140.08 80.14 80
3 11/01/2025 03:47:31 0.02, 140.79 0.90, 144.62 437.20 80
4 11/02/2025 16:09:15 -0.02, 140.77 0.29, 139.37 159.35 80
5 11/03/2025 15:47:49 -0.02, 140.76 -0.73, 143.91 358.38 80
6 11/05/2025 04:09:42 -0.02, 140.78 -0.50, 138.62 245.60 80
7 11/06/2025 03:53:36 -0.02, 140.78 0.52, 143.16 272.17 80
8 11/07/2025 16:15:20 0.02, 140.75 0.65, 137.91 323.69 80
9 11/08/2025 15:53:54 0.01, 140.75 -0.37, 142.45 194.06 80
10 11/10/2025 04:18:27 -0.02, 140.76 -0.84, 137.16 410.15 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/27/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251028.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 10/27/2025 in txt file.

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