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: 5/4/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/05/2025 16:03:17 0.03, 140.77 0.00, 140.78 2.64 80
2 05/08/2025 04:03:51 -0.03, 140.75 -0.20, 140.00 85.76 80
3 05/09/2025 03:47:48 -0.03, 140.74 0.82, 144.53 431.46 80
4 05/10/2025 16:09:38 0.02, 140.72 0.35, 139.25 167.62 80
5 05/11/2025 15:48:14 0.02, 140.70 -0.67, 143.77 349.67 80
6 05/13/2025 04:10:12 -0.01, 140.69 -0.52, 138.46 253.84 80
7 05/14/2025 03:54:08 -0.01, 140.67 0.50, 142.99 263.83 80
8 05/15/2025 16:15:58 0.00, 140.64 0.65, 137.70 334.35 80
9 05/16/2025 15:57:15 0.01, 140.62 -0.38, 142.23 183.56 80
10 05/18/2025 04:16:31 -0.01, 140.60 -0.86, 136.93 419.28 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/4/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250505.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/04/2025 in txt file.

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