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: 7/1/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/02/2025 16:16:31 0.01, 140.73 0.75, 137.58 359.92 80
2 07/03/2025 15:55:08 0.01, 140.72 -0.31, 142.10 156.77 80
3 07/05/2025 04:17:05 -0.01, 140.72 -0.89, 136.79 447.70 80
4 07/06/2025 04:01:01 0.00, 140.71 0.16, 141.31 69.41 80
5 07/08/2025 16:04:04 -0.01, 140.68 0.04, 140.58 12.17 80
6 07/11/2025 04:04:38 0.00, 140.66 -0.18, 139.79 98.17 80
7 07/12/2025 03:48:34 0.00, 140.64 0.83, 144.32 419.77 80
8 07/13/2025 16:10:21 0.00, 140.61 0.37, 139.06 177.04 80
9 07/14/2025 15:48:57 0.00, 140.59 -0.69, 143.58 341.16 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/1/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250702.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 07/01/2025 in txt file.

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