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: 3/17/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 03/18/2025 16:03:48 0.01, 140.76 -0.00, 140.69 8.43 80
2 03/21/2025 04:04:19 -0.01, 140.78 -0.18, 139.92 97.45 80
3 03/22/2025 03:48:13 -0.01, 140.78 0.82, 144.45 418.98 80
4 03/23/2025 16:10:00 0.02, 140.77 0.35, 139.19 180.33 80
5 03/24/2025 15:48:34 0.02, 140.77 -0.65, 143.72 336.26 80
6 03/26/2025 04:10:29 -0.02, 140.78 -0.55, 138.42 268.39 80
7 03/27/2025 03:54:24 -0.02, 140.77 0.47, 142.96 248.89 80
8 03/28/2025 16:16:10 0.02, 140.75 0.69, 137.69 348.74 80
9 03/29/2025 15:54:45 0.02, 140.74 -0.33, 142.22 168.74 80
10 03/31/2025 04:16:39 -0.02, 140.74 -0.90, 136.93 434.92 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 3/17/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250318.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 03/17/2025 in txt file.

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