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: 5/23/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/24/2025 04:04:08 0.01, 140.72 -0.17, 139.92 91.53 80
2 05/25/2025 03:48:05 0.01, 140.71 0.86, 144.45 426.06 80
3 05/26/2025 16:09:54 -0.01, 140.69 0.33, 139.17 173.62 80
4 05/27/2025 15:48:31 -0.01, 140.68 -0.70, 143.69 343.95 80
5 05/29/2025 04:10:28 0.01, 140.65 -0.50, 138.39 257.30 80
6 05/30/2025 03:54:25 0.01, 140.62 0.53, 142.91 260.97 80
7 05/31/2025 16:16:14 -0.00, 140.60 0.65, 137.64 336.98 80
8 06/01/2025 15:54:50 0.00, 140.57 -0.38, 142.16 181.84 80
9 06/03/2025 04:16:48 -0.00, 140.52 -0.81, 136.85 417.84 80
10 06/04/2025 04:00:44 -0.01, 140.49 0.22, 141.38 101.79 80
11 06/05/2025 16:22:33 0.01, 140.44 1.01, 136.11 494.04 80
12 06/06/2025 16:01:09 0.01, 140.40 -0.03, 140.63 25.78 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/23/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250524.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/23/2025 in txt file.

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