Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and AQUA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/22/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (AQUA) Time (AQUA) Lat,Lon (AQUA) SZA (AQUA ) Distance(km) Time Diff (sec)
1 07/22/2025 18:47:38 -81.30, 12.98 113.34 07/22/2025 18:48:51 -81.31, 13.07 113.39 1.86 73
2 07/22/2025 19:38:22 81.30,-179.49 66.64 07/22/2025 19:38:09 81.30,-179.42 66.64 1.32 13
3 07/25/2025 04:18:35 -81.30,-130.07 112.80 07/25/2025 04:19:45 -81.30,-129.92 112.86 2.62 70
4 07/25/2025 05:09:18 81.30, 37.81 67.13 07/25/2025 05:09:02 81.31, 37.96 67.12 2.68 16
5 07/27/2025 13:49:30 -81.30, 87.65 112.33 07/27/2025 13:50:37 -81.31, 87.67 112.37 0.91 67
6 07/27/2025 14:40:14 81.30,-104.90 67.66 07/27/2025 14:39:55 81.30,-104.85 67.66 0.96 19
7 07/29/2025 23:20:26 -81.30, -55.05 111.78 07/29/2025 23:21:29 -81.31, -54.93 111.83 2.25 63
8 07/30/2025 00:11:10 81.30, 112.36 68.22 07/30/2025 00:10:47 81.30, 112.54 68.21 2.93 23
9 08/01/2025 08:51:22 -81.30, 162.23 111.20 08/01/2025 08:52:21 -81.30, 162.26 111.24 0.72 59
10 08/01/2025 09:42:06 81.30, -30.39 68.80 08/01/2025 09:41:39 81.29, -30.28 68.80 2.04 27
11 08/03/2025 18:22:18 -81.30, 19.48 110.59 08/03/2025 18:23:12 -81.30, 19.65 110.65 2.94 54

Figure of NOAA-21 and AQUA satellite orbits during SNOs since TLE Epoch: 7/22/2025
SNOs_Map_NOAA-21_AQUA_20250722.jpg

Download SNOs between NOAA-21 and AQUA since TLE EPOCH: 07/22/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and AQUA