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: 5/27/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/29/2025 04:10:27 0.00, 140.77 -0.55, 138.40 271.08 80
2 05/30/2025 03:54:24 0.01, 140.77 0.48, 142.92 244.93 80
3 05/31/2025 16:16:13 -0.01, 140.78 0.70, 137.65 356.83 80
4 06/01/2025 15:54:50 -0.01, 140.77 -0.34, 142.17 159.76 80
5 06/03/2025 04:16:47 0.02, 140.75 -0.86, 136.86 442.86 80
6 06/04/2025 04:00:43 0.02, 140.74 0.17, 141.39 74.53 80
7 06/06/2025 16:03:48 -0.02, 140.70 0.02, 140.64 7.90 80
8 06/09/2025 04:04:23 0.03, 140.66 -0.12, 139.85 91.44 80
9 06/10/2025 03:48:19 0.03, 140.64 0.86, 144.38 426.60 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/27/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250528.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/27/2025 in txt file.

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