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: 11/30/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 12/02/2025 04:04:21 -0.02, 140.77 -0.21, 139.96 91.99 80
2 12/03/2025 03:48:19 -0.02, 140.76 0.83, 144.48 423.95 80
3 12/04/2025 16:10:08 0.03, 140.75 0.39, 139.21 175.85 80
4 12/05/2025 15:48:46 0.02, 140.75 -0.65, 143.73 339.90 80
5 12/07/2025 04:10:45 -0.03, 140.76 -0.54, 138.42 266.22 80
6 12/08/2025 03:54:41 -0.02, 140.75 0.44, 142.95 250.27 80
7 12/09/2025 16:16:32 0.03, 140.72 0.72, 137.67 347.76 80
8 12/10/2025 15:55:09 0.02, 140.71 -0.32, 142.19 169.16 80
9 12/12/2025 04:19:47 -0.03, 140.70 -0.90, 136.89 435.07 80
10 12/13/2025 03:58:25 -0.02, 140.68 0.14, 141.41 82.73 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 11/30/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20251201.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 11/30/2025 in txt file.

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