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: 4/3/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 04/06/2025 04:04:01 -0.04, 140.79 -0.22, 139.98 91.52 80
2 04/07/2025 03:47:55 -0.04, 140.78 0.82, 144.51 425.97 80
3 04/08/2025 16:09:41 0.05, 140.78 0.37, 139.25 173.08 80
4 04/09/2025 15:48:14 0.05, 140.77 -0.62, 143.80 344.87 80
5 04/11/2025 04:10:08 -0.05, 140.74 -0.55, 138.50 256.20 80
6 04/12/2025 03:54:02 -0.05, 140.73 0.45, 143.04 262.42 80
7 04/13/2025 16:15:48 0.05, 140.71 0.68, 137.77 335.00 80
8 04/14/2025 15:54:22 0.05, 140.70 -0.32, 142.31 183.71 80
9 04/16/2025 04:16:15 -0.05, 140.67 -0.88, 137.02 416.59 80
10 04/17/2025 04:00:09 -0.05, 140.65 0.12, 141.55 102.58 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/3/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250404.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/03/2025 in txt file.

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