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: 9/4/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/04/2025 16:16:36 -0.03, 140.78 0.73, 137.56 367.52 80
2 09/05/2025 15:55:11 -0.02, 140.78 -0.32, 142.08 149.20 80
3 09/07/2025 04:17:06 0.03, 140.77 -0.85, 136.78 454.63 80
4 09/08/2025 04:01:01 0.03, 140.77 0.14, 141.32 62.74 80
5 09/10/2025 16:04:04 -0.03, 140.75 -0.01, 140.58 18.58 80
6 09/11/2025 15:42:38 -0.02, 140.74 -1.00, 145.12 499.06 80
7 09/13/2025 04:04:34 0.03, 140.73 -0.15, 139.81 103.97 80
8 09/14/2025 03:48:28 0.02, 140.72 0.85, 144.35 413.84 80
9 09/15/2025 16:10:15 -0.03, 140.70 0.33, 139.08 184.20 80
10 09/16/2025 15:48:50 -0.03, 140.69 -0.67, 143.62 333.88 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/4/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250905.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 09/04/2025 in txt file.

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