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: 4/26/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/27/2025 04:09:52 -0.02, 140.77 -0.53, 138.56 252.51 80
2 04/28/2025 03:53:49 -0.01, 140.77 0.53, 143.07 262.84 80
3 04/29/2025 16:15:39 0.02, 140.77 0.66, 137.79 338.79 80
4 04/30/2025 15:54:16 0.03, 140.77 -0.34, 142.32 176.76 80
5 05/02/2025 04:16:13 -0.03, 140.78 -0.87, 137.02 429.31 80
6 05/03/2025 04:00:10 -0.03, 140.78 0.13, 141.54 86.79 80
7 05/05/2025 16:00:37 0.04, 140.76 0.03, 140.79 3.47 80
8 05/08/2025 04:03:50 -0.04, 140.74 -0.21, 140.01 83.32 80
9 05/09/2025 03:47:47 -0.04, 140.72 0.81, 144.53 434.28 80
10 05/10/2025 16:09:37 0.04, 140.69 0.36, 139.25 163.79 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/26/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250427.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/26/2025 in txt file.

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