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: 11/1/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/02/2025 16:09:15 -0.00, 140.72 0.31, 139.37 153.38 80
2 11/03/2025 15:47:49 0.00, 140.70 -0.71, 143.91 365.45 80
3 11/05/2025 04:09:43 -0.00, 140.69 -0.46, 138.62 236.49 80
4 11/06/2025 03:53:37 -0.00, 140.68 0.56, 143.16 282.65 80
5 11/07/2025 16:15:21 0.00, 140.64 0.61, 137.90 312.01 80
6 11/08/2025 15:53:54 0.01, 140.62 -0.41, 142.44 207.17 80
7 11/10/2025 04:15:49 0.01, 140.61 -0.75, 137.14 394.83 80
8 11/11/2025 03:59:42 0.01, 140.59 0.27, 141.68 124.94 80
9 11/12/2025 16:21:26 -0.02, 140.53 0.89, 136.43 467.86 80
10 11/13/2025 16:00:00 -0.02, 140.51 -0.14, 140.96 52.45 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/1/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251102.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/01/2025 in txt file.

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