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: 5/28/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/29/2025 04:10:28 0.00, 140.78 -0.52, 138.39 271.36 80
2 05/30/2025 03:54:24 0.01, 140.78 0.51, 142.92 244.53 80
3 05/31/2025 16:16:14 -0.01, 140.78 0.67, 137.64 357.14 80
4 06/01/2025 15:54:49 -0.02, 140.77 -0.31, 142.18 159.37 80
5 06/03/2025 04:16:47 0.02, 140.76 -0.83, 136.86 443.73 80
6 06/04/2025 04:00:43 0.02, 140.74 0.14, 141.39 73.59 80
7 06/06/2025 16:03:49 -0.02, 140.71 -0.02, 140.64 8.44 80
8 06/09/2025 04:04:23 0.03, 140.67 -0.14, 139.85 92.76 80
9 06/10/2025 03:48:19 0.03, 140.65 0.90, 144.38 425.17 80
10 06/11/2025 16:10:07 -0.04, 140.63 0.31, 139.11 173.35 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/28/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250529.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/28/2025 in txt file.

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