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: 1/16/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 01/17/2025 03:48:30 0.01, 140.75 0.83, 144.47 424.14 80
2 01/18/2025 16:10:14 -0.01, 140.73 0.34, 139.21 173.78 80
3 01/19/2025 15:48:46 -0.01, 140.72 -0.66, 143.76 344.74 80
4 01/21/2025 04:10:39 0.02, 140.71 -0.50, 138.46 255.98 80
5 01/22/2025 03:54:31 0.02, 140.69 0.51, 143.00 263.06 80
6 01/23/2025 16:16:16 -0.02, 140.67 0.65, 137.74 333.56 80
7 01/24/2025 15:54:48 -0.03, 140.65 -0.36, 142.29 185.41 80
8 01/26/2025 04:16:40 0.03, 140.63 -0.79, 136.99 415.19 80
9 01/27/2025 04:00:33 0.04, 140.61 0.22, 141.53 104.19 80
10 01/28/2025 16:22:17 -0.04, 140.58 0.92, 136.27 491.31 80
11 01/29/2025 16:00:50 -0.04, 140.56 -0.10, 140.81 28.28 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 1/16/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250117.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 01/16/2025 in txt file.

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