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: 7/3/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 07/05/2025 04:17:05 -0.01, 140.72 -0.87, 136.79 447.73 80
2 07/06/2025 04:01:01 0.00, 140.71 0.13, 141.32 69.28 80
3 07/08/2025 16:04:05 -0.01, 140.68 0.01, 140.57 12.14 80
4 07/11/2025 04:04:38 0.01, 140.66 -0.21, 139.80 98.59 80
5 07/12/2025 03:48:34 0.00, 140.65 0.85, 144.32 419.34 80
6 07/13/2025 16:10:21 0.00, 140.61 0.35, 139.05 177.58 80
7 07/14/2025 15:48:57 0.00, 140.60 -0.66, 143.59 340.53 80
8 07/16/2025 04:10:54 -0.00, 140.58 -0.53, 138.28 262.11 80
9 07/17/2025 03:54:50 -0.01, 140.55 0.47, 142.81 256.60 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 7/3/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250704.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 07/03/2025 in txt file.

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