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: 11/29/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 12/02/2025 04:04:22 -0.02, 140.77 -0.17, 139.95 93.06 80
2 12/03/2025 03:48:18 -0.02, 140.77 0.80, 144.49 422.91 80
3 12/04/2025 16:10:09 0.03, 140.76 0.36, 139.21 176.68 80
4 12/05/2025 15:48:45 0.02, 140.76 -0.62, 143.74 339.06 80
5 12/07/2025 04:10:44 -0.03, 140.77 -0.57, 138.43 267.36 80
6 12/08/2025 03:52:02 -0.02, 140.76 0.47, 142.95 249.08 80
7 12/09/2025 16:16:32 0.03, 140.73 0.70, 137.67 348.77 80
8 12/10/2025 15:55:09 0.02, 140.72 -0.29, 142.20 168.15 80
9 12/12/2025 04:19:48 -0.03, 140.71 -0.88, 136.88 436.34 80
10 12/13/2025 03:58:25 -0.02, 140.69 0.11, 141.41 81.49 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/29/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251130.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/29/2025 in txt file.

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