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: 6/3/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/04/2025 04:00:43 0.01, 140.76 0.17, 141.39 72.35 80
2 06/06/2025 16:03:48 -0.01, 140.75 0.01, 140.65 11.38 80
3 06/09/2025 04:04:22 0.02, 140.72 -0.16, 139.86 97.27 80
4 06/10/2025 03:48:17 0.02, 140.71 0.83, 144.40 420.06 80
5 06/11/2025 16:10:07 -0.02, 140.69 0.31, 139.11 179.45 80
6 06/12/2025 15:48:42 -0.02, 140.68 -0.68, 143.65 337.97 80
7 06/14/2025 04:10:39 0.02, 140.66 -0.51, 138.34 264.45 80
8 06/15/2025 03:54:36 0.02, 140.64 0.54, 142.86 253.65 80
9 06/16/2025 16:16:24 -0.02, 140.61 0.63, 137.59 344.25 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/3/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250604.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 06/03/2025 in txt file.

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