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: 5/25/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/26/2025 16:09:53 0.01, 140.78 0.38, 139.18 182.05 80
2 05/27/2025 15:48:30 0.00, 140.78 -0.65, 143.71 333.55 80
3 05/29/2025 04:10:27 -0.00, 140.77 -0.55, 138.40 270.43 80
4 05/30/2025 03:54:24 0.00, 140.77 0.48, 142.92 245.70 80
5 05/31/2025 16:16:13 -0.01, 140.77 0.69, 137.65 356.10 80
6 06/01/2025 15:54:50 -0.01, 140.76 -0.34, 142.17 160.54 80
7 06/03/2025 04:16:47 0.01, 140.74 -0.86, 136.86 441.80 80
8 06/04/2025 04:00:43 0.02, 140.72 0.18, 141.39 75.70 80
9 06/06/2025 16:03:48 -0.02, 140.69 0.01, 140.64 6.32 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/25/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250526.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/25/2025 in txt file.

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