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: 8/5/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/06/2025 04:17:12 -0.00, 140.78 -0.87, 136.76 457.25 80
2 08/07/2025 04:01:07 -0.01, 140.78 0.09, 141.30 58.82 80
3 08/09/2025 16:04:10 0.01, 140.79 0.09, 140.57 26.08 80
4 08/10/2025 15:42:45 0.01, 140.79 -0.93, 145.09 490.45 80
5 08/12/2025 04:04:42 -0.01, 140.78 -0.26, 139.79 113.51 80
6 08/13/2025 03:48:37 -0.01, 140.78 0.77, 144.32 403.46 80
7 08/14/2025 16:10:25 0.02, 140.77 0.38, 139.04 196.05 80
8 08/15/2025 15:49:01 0.01, 140.76 -0.64, 143.57 320.82 80
9 08/17/2025 04:10:56 -0.02, 140.76 -0.59, 138.28 282.84 80
10 08/18/2025 03:54:52 -0.02, 140.75 0.44, 142.81 234.44 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/5/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250806.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 08/05/2025 in txt file.

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