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: 1/27/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 01/29/2025 16:00:47 0.01, 140.76 -0.01, 140.84 8.42 80
2 02/01/2025 04:03:51 -0.01, 140.74 -0.15, 140.09 74.07 80
3 02/02/2025 03:47:43 -0.00, 140.73 0.88, 144.63 444.78 80
4 02/03/2025 16:09:27 0.00, 140.71 0.27, 139.37 152.05 80
5 02/04/2025 15:47:58 0.00, 140.70 -0.71, 143.92 367.00 80
6 02/06/2025 04:09:50 -0.01, 140.68 -0.47, 138.64 232.89 80
7 02/07/2025 03:53:42 -0.01, 140.66 0.57, 143.17 286.53 80
8 02/08/2025 16:15:24 0.01, 140.64 0.63, 137.93 309.18 80
9 02/09/2025 15:53:57 0.01, 140.62 -0.42, 142.46 210.51 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 1/27/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250128.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 01/27/2025 in txt file.

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