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: 4/4/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/06/2025 04:04:01 -0.04, 140.79 -0.24, 139.99 91.60 80
2 04/07/2025 03:47:55 -0.04, 140.78 0.81, 144.52 425.86 80
3 04/08/2025 16:09:40 0.05, 140.78 0.39, 139.26 173.33 80
4 04/09/2025 15:48:14 0.05, 140.77 -0.60, 143.80 344.58 80
5 04/11/2025 04:10:08 -0.05, 140.75 -0.57, 138.50 256.52 80
6 04/12/2025 03:54:03 -0.05, 140.73 0.49, 143.03 262.07 80
7 04/13/2025 16:15:48 0.05, 140.71 0.70, 137.77 335.49 80
8 04/14/2025 15:54:22 0.05, 140.70 -0.30, 142.31 183.17 80
9 04/16/2025 04:16:15 -0.05, 140.67 -0.90, 137.02 417.16 80
10 04/17/2025 04:00:09 -0.05, 140.66 0.17, 141.55 101.97 80
11 04/18/2025 16:21:55 0.06, 140.63 1.01, 136.29 494.73 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/4/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250405.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/04/2025 in txt file.

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