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: 10/24/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 10/25/2025 04:16:17 0.01, 140.74 -0.83, 137.02 424.43 80
2 10/26/2025 04:00:11 0.00, 140.74 0.17, 141.56 93.38 80
3 10/28/2025 16:00:30 -0.00, 140.71 -0.04, 140.84 14.27 80
4 10/31/2025 04:03:37 0.01, 140.70 -0.13, 140.08 70.00 80
5 11/01/2025 03:47:31 0.01, 140.68 0.88, 144.62 448.78 80
6 11/02/2025 16:09:15 -0.01, 140.65 0.30, 139.37 146.63 80
7 11/03/2025 15:47:49 -0.00, 140.64 -0.71, 143.91 372.47 80
8 11/05/2025 04:09:43 0.00, 140.62 -0.45, 138.61 229.09 80
9 11/06/2025 03:53:37 -0.00, 140.60 0.56, 143.15 290.16 80
10 11/07/2025 16:15:21 0.00, 140.57 0.61, 137.90 304.66 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 10/24/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251025.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 10/24/2025 in txt file.

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