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, 82.91 93.43 10/24/2025 17:40:30 -74.47, 82.83 93.45 3.41 42
2 10/24/2025 18:30:33 74.42,-109.60 86.52 10/24/2025 18:29:49 74.44,-109.59 86.53 1.37 44
3 10/27/2025 04:01:26 74.50, 107.49 87.41 10/27/2025 04:01:52 74.48, 107.45 87.39 2.54 26
4 10/27/2025 04:52:08 -74.42, -85.00 92.66 10/27/2025 04:51:13 -74.40, -85.06 92.68 3.29 55
5 10/29/2025 14:23:01 -74.50, 132.09 91.78 10/29/2025 14:23:14 -74.52, 132.14 91.77 2.39 13
6 10/29/2025 15:13:46 74.44, -60.45 88.17 10/29/2025 15:12:34 74.43, -60.39 88.17 2.32 72
7 10/31/2025 23:54:01 -74.92, -11.76 90.55 10/31/2025 23:55:11 -74.81, -10.22 90.72 46.52 70
8 11/01/2025 00:44:37 74.48, 156.74 88.99 11/01/2025 00:44:35 74.47, 156.64 88.98 3.29 2
9 11/01/2025 01:35:11 -74.01, -34.74 91.51 11/01/2025 01:34:02 -74.08, -36.58 91.37 56.84 69
10 11/03/2025 10:15:30 74.58, 13.77 89.85 11/03/2025 10:16:35 74.58, 13.84 89.84 2.07 65
11 11/03/2025 11:06:12 -74.49,-178.67 90.24 11/03/2025 11:05:56 -74.50,-178.68 90.23 1.18 16
12 11/05/2025 20:37:05 -74.59, 38.36 89.41 11/05/2025 20:37:56 -74.58, 38.46 89.42 2.91 51
13 11/05/2025 21:27:49 74.50,-154.09 90.51 11/05/2025 21:27:16 74.50,-154.07 90.52 0.77 33

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 10/23/2025
SNOs_Map_NOAA-21_TERRA_20251024.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