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: 8/2/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 08/03/2025 16:16:40 -0.01, 140.76 0.70, 137.53 367.57 80
2 08/04/2025 15:55:16 -0.01, 140.77 -0.32, 142.06 147.90 80
3 08/06/2025 04:17:12 0.00, 140.78 -0.88, 136.76 457.61 80
4 08/07/2025 04:01:08 0.00, 140.78 0.14, 141.29 58.44 80
5 08/09/2025 16:04:11 0.01, 140.79 0.04, 140.55 26.41 80
6 08/10/2025 15:42:46 0.01, 140.79 -0.98, 145.08 490.00 80
7 08/12/2025 04:04:41 -0.01, 140.79 -0.26, 139.79 114.11 80
8 08/13/2025 03:48:37 -0.01, 140.78 0.77, 144.32 402.87 80
9 08/14/2025 16:10:25 0.01, 140.77 0.38, 139.04 196.64 80
10 08/15/2025 15:49:00 0.01, 140.77 -0.59, 143.58 320.30 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/2/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250803.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 08/02/2025 in txt file.

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