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: 11/28/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/29/2025 16:03:44 0.01, 140.76 0.04, 140.75 3.33 80
2 12/02/2025 04:04:21 -0.02, 140.76 -0.21, 139.96 91.10 80
3 12/03/2025 03:48:19 -0.02, 140.75 0.83, 144.48 425.49 80
4 12/04/2025 16:10:09 0.02, 140.72 0.34, 139.20 173.08 80
5 12/05/2025 15:48:46 0.02, 140.72 -0.64, 143.73 343.36 80
6 12/07/2025 04:13:25 -0.03, 140.72 -0.54, 138.42 262.00 80
7 12/08/2025 03:52:02 -0.02, 140.70 0.50, 142.94 255.10 80
8 12/09/2025 16:16:33 0.03, 140.67 0.67, 137.66 341.78 80
9 12/10/2025 15:55:09 0.02, 140.65 -0.31, 142.19 175.82 80
10 12/12/2025 04:19:48 -0.03, 140.63 -0.85, 136.88 427.55 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/28/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251129.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/28/2025 in txt file.

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