Simultaneous Nadir Overpasses (SNOs) Predictions

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

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/23/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 10/24/2025 17:39:48 -74.49, 82.93 93.43 10/24/2025 17:40:30 -74.48, 82.84 93.45 2.67 42
2 10/24/2025 18:30:33 74.42,-109.59 86.51 10/24/2025 18:29:49 74.44,-109.57 86.54 2.31 44
3 10/27/2025 04:01:26 74.50, 107.50 87.41 10/27/2025 04:01:52 74.48, 107.46 87.39 1.66 26
4 10/27/2025 04:52:08 -74.42, -84.99 92.67 10/27/2025 04:51:13 -74.41, -85.05 92.67 2.27 55
5 10/29/2025 14:23:01 -74.50, 132.10 91.79 10/29/2025 14:23:15 -74.47, 132.04 91.81 3.39 14
6 10/29/2025 15:13:46 74.44, -60.45 88.17 10/29/2025 15:12:34 74.44, -60.37 88.17 2.30 72
7 10/31/2025 23:54:00 -74.92, -11.76 90.55 10/31/2025 23:55:10 -74.82, -10.20 90.72 46.75 70
8 11/01/2025 00:44:37 74.48, 156.74 88.99 11/01/2025 00:44:35 74.47, 156.65 88.98 2.72 2
9 11/01/2025 01:35:11 -74.01, -34.74 91.52 11/01/2025 01:34:02 -74.08, -36.57 91.37 56.52 69
10 11/03/2025 10:15:30 74.58, 13.77 89.85 11/03/2025 10:16:35 74.58, 13.85 89.84 2.56 65
11 11/03/2025 11:06:12 -74.49,-178.68 90.24 11/03/2025 11:05:56 -74.50,-178.67 90.23 1.41 16
12 11/05/2025 20:37:05 -74.59, 38.35 89.40 11/05/2025 20:37:56 -74.58, 38.46 89.42 3.53 51
13 11/05/2025 21:27:49 74.50,-154.11 90.52 11/05/2025 21:27:16 74.50,-154.06 90.52 1.34 33

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_NOAA-21_TERRA_20251023.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 10/23/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA