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: 3/20/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 03/21/2025 04:04:18 -0.02, 140.77 -0.20, 139.92 96.90 80
2 03/22/2025 03:48:13 -0.02, 140.77 0.80, 144.46 419.56 80
3 03/23/2025 16:09:59 0.02, 140.77 0.37, 139.19 180.18 80
4 03/24/2025 15:48:34 0.02, 140.77 -0.64, 143.73 336.47 80
5 03/26/2025 04:10:29 -0.03, 140.77 -0.56, 138.43 267.53 80
6 03/27/2025 03:54:23 -0.03, 140.77 0.45, 142.96 249.84 80
7 03/28/2025 16:16:10 0.03, 140.75 0.70, 137.69 348.21 80
8 03/29/2025 15:54:44 0.03, 140.74 -0.32, 142.22 169.32 80
9 03/31/2025 04:16:39 -0.03, 140.73 -0.90, 136.93 433.73 80
10 04/01/2025 04:00:33 -0.02, 140.72 0.13, 141.46 84.23 80
11 04/03/2025 16:00:53 0.03, 140.69 0.04, 140.74 5.73 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 3/20/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250321.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 03/20/2025 in txt file.

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