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: 11/10/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/11/2025 04:00:05 0.00, 140.79 0.21, 141.60 92.12 80
2 11/13/2025 16:00:33 -0.01, 140.81 -0.02, 140.85 4.15 80
3 11/16/2025 04:03:51 0.01, 140.83 -0.17, 140.05 88.95 80
4 11/17/2025 03:47:49 0.01, 140.83 0.85, 144.58 426.50 80
5 11/18/2025 16:09:39 0.01, 140.82 0.34, 139.30 173.46 80
6 11/19/2025 15:48:16 0.01, 140.83 -0.68, 143.82 341.94 80
7 11/21/2025 04:10:16 -0.01, 140.84 -0.56, 138.52 265.33 80
8 11/22/2025 03:54:13 -0.01, 140.84 0.46, 143.04 250.50 80
9 11/23/2025 16:16:03 0.02, 140.82 0.71, 137.76 348.55 80
10 11/24/2025 15:54:41 0.01, 140.81 -0.31, 142.28 167.26 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/10/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251111.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/10/2025 in txt file.

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