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: 1/30/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 02/01/2025 04:04:02 0.03, 140.75 -0.14, 140.04 81.33 80
2 02/02/2025 03:47:58 0.03, 140.74 0.87, 144.57 435.55 80
3 02/03/2025 16:09:48 -0.03, 140.73 0.32, 139.29 164.88 80
4 02/04/2025 15:48:24 -0.03, 140.72 -0.71, 143.82 352.17 80
5 02/06/2025 04:10:22 0.02, 140.70 -0.44, 138.50 250.35 80
6 02/07/2025 03:54:18 0.02, 140.68 0.53, 143.03 267.28 80
7 02/08/2025 16:16:06 0.01, 140.66 0.68, 137.76 331.31 80
8 02/09/2025 15:54:43 0.01, 140.65 -0.37, 142.28 186.46 80
9 02/11/2025 04:16:40 -0.01, 140.61 -0.82, 136.97 415.13 80
10 02/12/2025 04:00:36 -0.01, 140.59 0.17, 141.50 103.54 80
11 02/13/2025 16:22:24 0.01, 140.55 1.00, 136.23 493.14 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 1/30/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250131.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 01/30/2025 in txt file.

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