Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/11/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 09/12/2025 06:26:56 -74.29,-108.57 109.56 09/12/2025 06:28:07 -74.27,-108.61 109.60 2.83 71
2 09/12/2025 07:17:40 74.21, 58.94 70.37 09/12/2025 07:17:25 74.23, 58.98 70.38 1.81 15
3 09/14/2025 16:48:36 74.31, -84.03 71.39 09/14/2025 16:49:38 74.29, -83.99 71.35 2.88 62
4 09/14/2025 17:39:19 -74.24, 83.45 108.68 09/14/2025 17:39:00 -74.24, 83.55 108.69 3.13 19
5 09/17/2025 03:10:14 -74.29, -59.39 107.71 09/17/2025 03:11:13 -74.29, -59.44 107.73 1.39 59
6 09/17/2025 04:00:58 74.22, 108.10 72.23 09/17/2025 04:00:31 74.24, 108.13 72.24 2.06 27
7 09/19/2025 13:31:54 74.33, -34.89 73.26 09/19/2025 13:32:43 74.33, -34.78 73.24 3.47 49
8 09/19/2025 14:22:37 -74.25, 132.61 106.81 09/19/2025 14:22:06 -74.23, 132.66 106.84 3.21 31
9 09/21/2025 23:53:32 -74.31, -10.25 105.83 09/21/2025 23:54:18 -74.30, -10.27 105.85 0.73 46
10 09/22/2025 00:44:16 74.25, 157.22 74.12 09/22/2025 00:43:36 74.25, 157.29 74.12 2.08 40
11 09/24/2025 10:15:11 74.31, 14.34 75.11 09/24/2025 10:15:48 74.31, 14.32 75.10 0.65 37
12 09/24/2025 11:05:54 -74.23,-178.15 104.97 09/24/2025 11:05:11 -74.22,-178.23 104.97 3.04 43

Figure of NOAA-20 and TERRA satellite orbits during SNOs since TLE Epoch: 9/11/2025
SNOs_Map_NOAA-20_TERRA_20250912.jpg

Download SNOs between NOAA-20 and TERRA since TLE EPOCH: 09/11/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and TERRA