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: 6/14/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/15/2025 03:54:36 0.02, 140.77 0.49, 142.87 239.88 80
2 06/16/2025 16:16:24 -0.02, 140.76 0.70, 137.60 360.46 80
3 06/17/2025 15:54:59 -0.02, 140.76 -0.29, 142.13 156.45 80
4 06/19/2025 04:16:58 0.02, 140.74 -0.85, 136.82 447.23 80
5 06/20/2025 04:00:53 0.02, 140.73 0.14, 141.35 70.14 80
6 06/22/2025 16:03:58 -0.03, 140.70 -0.02, 140.60 11.90 80
7 06/25/2025 04:04:31 0.03, 140.68 -0.18, 139.82 97.71 80
8 06/26/2025 03:48:27 0.03, 140.66 0.87, 144.34 420.28 80
9 06/27/2025 16:10:16 -0.04, 140.63 0.29, 139.07 177.32 80
10 06/28/2025 15:48:51 -0.03, 140.61 -0.71, 143.60 341.18 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/14/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250615.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 06/14/2025 in txt file.

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