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: 11/26/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 11/27/2025 04:00:38 -0.01, 140.79 0.17, 141.49 80.65 80
2 11/29/2025 16:03:45 0.01, 140.79 0.02, 140.75 5.00 80
3 12/02/2025 04:04:21 -0.02, 140.81 -0.19, 139.96 96.92 80
4 12/03/2025 03:48:18 -0.02, 140.81 0.79, 144.49 418.72 80
5 12/04/2025 16:10:08 0.02, 140.80 0.37, 139.21 181.16 80
6 12/05/2025 15:48:46 0.02, 140.80 -0.67, 143.73 334.31 80
7 12/07/2025 04:13:24 -0.03, 140.82 -0.57, 138.43 272.65 80
8 12/08/2025 03:52:02 -0.02, 140.81 0.47, 142.95 243.49 80
9 12/09/2025 16:16:32 0.03, 140.79 0.69, 137.67 354.72 80
10 12/10/2025 15:55:08 0.02, 140.78 -0.29, 142.20 161.92 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/26/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251127.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/26/2025 in txt file.

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