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: 1/19/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 01/21/2025 04:10:38 0.02, 140.77 -0.51, 138.47 262.72 80
2 01/22/2025 03:54:31 0.02, 140.77 0.50, 143.01 254.62 80
3 01/23/2025 16:16:14 0.02, 140.77 0.71, 137.76 343.61 80
4 01/24/2025 15:54:47 0.01, 140.77 -0.30, 142.30 173.65 80
5 01/26/2025 04:16:39 -0.01, 140.78 -0.84, 137.00 429.73 80
6 01/27/2025 04:00:32 -0.00, 140.78 0.18, 141.55 87.87 80
7 01/29/2025 16:00:47 0.00, 140.77 -0.02, 140.83 7.73 80
8 02/01/2025 04:03:51 -0.00, 140.76 -0.14, 140.09 75.93 80
9 02/02/2025 03:47:44 -0.00, 140.75 0.89, 144.63 442.88 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 1/19/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250120.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 01/19/2025 in txt file.

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