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: 1/31/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 02/01/2025 04:04:02 0.03, 140.77 -0.11, 140.04 82.61 80
2 02/02/2025 03:47:59 0.03, 140.77 0.90, 144.56 433.05 80
3 02/03/2025 16:09:48 -0.03, 140.77 0.30, 139.29 168.39 80
4 02/04/2025 15:48:25 -0.03, 140.77 -0.72, 143.81 347.45 80
5 02/06/2025 04:10:22 0.02, 140.76 -0.49, 138.51 257.74 80
6 02/07/2025 03:54:18 0.02, 140.76 0.53, 143.03 258.61 80
7 02/08/2025 16:16:07 0.01, 140.75 0.69, 137.76 341.17 80
8 02/09/2025 15:54:43 0.01, 140.75 -0.35, 142.28 175.39 80
9 02/11/2025 04:16:41 -0.01, 140.74 -0.86, 136.97 428.83 80
10 02/12/2025 04:00:37 -0.01, 140.72 0.19, 141.50 88.53 80
11 02/14/2025 16:01:01 0.00, 140.68 0.01, 140.76 8.84 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 1/31/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250201.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 01/31/2025 in txt file.

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