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: 5/24/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/25/2025 03:48:05 0.00, 140.76 0.83, 144.45 420.71 80
2 05/26/2025 16:09:54 -0.00, 140.78 0.36, 139.18 182.63 80
3 05/27/2025 15:48:30 -0.01, 140.79 -0.67, 143.70 332.64 80
4 05/29/2025 04:10:28 0.00, 140.78 -0.52, 138.39 272.13 80
5 05/30/2025 03:54:24 -0.00, 140.78 0.51, 142.92 243.86 80
6 05/31/2025 16:16:13 0.01, 140.79 0.73, 137.65 357.73 80
7 06/01/2025 15:54:49 0.01, 140.78 -0.30, 142.18 158.74 80
8 06/03/2025 04:16:46 -0.01, 140.77 -0.89, 136.87 444.42 80
9 06/04/2025 04:00:43 -0.01, 140.76 0.14, 141.39 72.83 80
10 06/06/2025 16:03:48 0.02, 140.73 0.05, 140.65 9.23 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/24/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250525.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/24/2025 in txt file.

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