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: 5/6/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/08/2025 04:03:51 -0.03, 140.76 -0.19, 140.00 86.35 80
2 05/09/2025 03:47:48 -0.03, 140.75 0.83, 144.53 430.51 80
3 05/10/2025 16:09:38 0.03, 140.73 0.34, 139.24 169.20 80
4 05/11/2025 15:48:15 0.03, 140.72 -0.67, 143.77 347.78 80
5 05/13/2025 04:10:12 -0.03, 140.71 -0.52, 138.46 255.77 80
6 05/14/2025 03:54:08 -0.02, 140.70 0.50, 142.99 261.45 80
7 05/15/2025 16:15:59 0.02, 140.67 0.66, 137.70 337.54 80
8 05/16/2025 15:54:35 0.02, 140.66 -0.36, 142.23 179.92 80
9 05/18/2025 04:16:32 -0.02, 140.64 -0.83, 136.92 423.22 80
10 05/19/2025 04:00:28 -0.03, 140.62 0.13, 141.46 94.90 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/6/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250507.jpg

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

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