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: 6/10/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 06/11/2025 16:10:06 -0.02, 140.77 0.35, 139.12 187.72 80
2 06/12/2025 15:48:42 -0.02, 140.77 -0.64, 143.66 328.14 80
3 06/14/2025 04:10:40 0.01, 140.77 -0.50, 138.34 277.02 80
4 06/15/2025 03:54:36 0.01, 140.77 0.48, 142.87 239.49 80
5 06/16/2025 16:16:24 -0.01, 140.76 0.70, 137.60 360.52 80
6 06/17/2025 15:54:59 0.00, 140.76 -0.28, 142.14 156.26 80
7 06/19/2025 04:16:58 0.00, 140.75 -0.86, 136.82 448.12 80
8 06/20/2025 04:00:53 0.00, 140.74 0.13, 141.35 69.09 80
9 06/22/2025 16:03:58 -0.01, 140.71 -0.00, 140.60 12.82 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 6/10/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250611.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 06/10/2025 in txt file.

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