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: 6/5/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/06/2025 16:03:48 -0.01, 140.75 0.03, 140.65 11.30 80
2 06/09/2025 04:04:21 0.01, 140.72 -0.19, 139.87 97.07 80
3 06/10/2025 03:48:18 0.01, 140.71 0.85, 144.39 420.18 80
4 06/11/2025 16:10:06 -0.01, 140.70 0.34, 139.12 179.56 80
5 06/12/2025 15:48:43 -0.01, 140.68 -0.70, 143.64 337.62 80
6 06/14/2025 04:10:40 0.02, 140.66 -0.50, 138.34 264.94 80
7 06/15/2025 03:54:36 0.02, 140.64 0.49, 142.87 253.00 80
8 06/16/2025 16:16:25 -0.01, 140.62 0.64, 137.59 344.90 80
9 06/17/2025 15:55:00 0.00, 140.60 -0.35, 142.12 173.43 80
10 06/19/2025 04:16:58 -0.00, 140.57 -0.85, 136.81 428.08 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/5/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250606.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 06/05/2025 in txt file.

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