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: 3/28/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 03/29/2025 15:54:44 0.02, 140.77 -0.33, 142.23 166.63 80
2 03/31/2025 04:16:38 -0.02, 140.77 -0.90, 136.94 437.22 80
3 04/01/2025 04:00:33 -0.02, 140.77 0.13, 141.47 79.18 80
4 04/03/2025 16:03:33 0.02, 140.79 0.03, 140.74 5.35 80
5 04/06/2025 04:04:00 -0.03, 140.78 -0.24, 139.99 91.09 80
6 04/07/2025 03:47:55 -0.03, 140.77 0.81, 144.51 426.57 80
7 04/08/2025 16:09:40 0.03, 140.77 0.38, 139.26 172.27 80
8 04/09/2025 15:48:15 0.03, 140.76 -0.67, 143.78 345.80 80
9 04/11/2025 04:10:08 -0.03, 140.73 -0.54, 138.50 254.89 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 3/28/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250329.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 03/28/2025 in txt file.

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