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: 9/2/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 09/03/2025 03:54:48 0.01, 140.78 0.49, 142.82 233.28 80
2 09/04/2025 16:16:36 -0.01, 140.77 0.71, 137.55 366.88 80
3 09/05/2025 15:55:10 -0.01, 140.77 -0.28, 142.09 149.70 80
4 09/07/2025 04:17:06 0.01, 140.78 -0.89, 136.79 454.91 80
5 09/08/2025 04:01:00 0.01, 140.78 0.11, 141.33 62.35 80
6 09/10/2025 16:04:03 -0.01, 140.75 0.03, 140.59 18.87 80
7 09/11/2025 15:42:38 -0.01, 140.75 -0.97, 145.12 498.50 80
8 09/13/2025 04:04:33 0.01, 140.75 -0.18, 139.82 105.26 80
9 09/14/2025 03:48:27 0.01, 140.74 0.83, 144.35 412.37 80
10 09/15/2025 16:10:15 -0.01, 140.71 0.35, 139.09 185.41 80
11 09/16/2025 15:48:49 -0.01, 140.70 -0.66, 143.62 332.53 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 9/2/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250903.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 09/02/2025 in txt file.

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