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: 5/14/2025
Index Date Time (HIMAWARI-9) HIMAWARI-9 Lat,Lon NOAA-21 Lat,Lon Distance(km) Time Diff (sec)
1 05/15/2025 16:15:58 0.02, 140.77 0.70, 137.71 348.07 80
2 05/16/2025 15:54:35 0.02, 140.77 -0.32, 142.24 167.75 80
3 05/18/2025 04:16:32 -0.02, 140.78 -0.87, 136.93 437.85 80
4 05/19/2025 04:00:28 -0.03, 140.77 0.15, 141.46 78.62 80
5 05/21/2025 16:03:34 0.03, 140.75 0.03, 140.71 4.54 80
6 05/24/2025 04:04:08 -0.03, 140.74 -0.20, 139.93 92.06 80
7 05/25/2025 03:48:05 -0.03, 140.72 0.83, 144.45 425.08 80
8 05/26/2025 16:07:14 0.01, 140.70 0.36, 139.18 173.87 80
9 05/27/2025 15:51:10 0.02, 140.69 -0.67, 143.70 343.29 80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 5/14/2025
SNOs_Map_HIMAWARI-9_NOAA-21_20250515.jpg

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 05/14/2025 in txt file.

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