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: 5/11/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/13/2025 04:10:12 -0.00, 140.75 -0.53, 138.47 260.50 80
2 05/14/2025 03:54:08 -0.00, 140.74 0.48, 142.99 256.03 80
3 05/15/2025 16:15:58 -0.00, 140.72 0.68, 137.71 343.81 80
4 05/16/2025 15:54:35 -0.01, 140.72 -0.34, 142.23 172.66 80
5 05/18/2025 04:16:32 0.02, 140.71 -0.85, 136.93 432.03 80
6 05/19/2025 04:00:29 0.01, 140.70 0.17, 141.45 85.19 80
7 05/21/2025 16:00:55 -0.00, 140.66 0.02, 140.70 5.75 80
8 05/24/2025 04:04:09 0.02, 140.62 -0.12, 139.91 81.12 80
9 05/25/2025 03:48:06 0.02, 140.61 0.90, 144.43 436.86 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/11/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250512.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/11/2025 in txt file.

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