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: 10/26/2025
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 10/27/2025 04:01:26 74.50, 107.48 87.41 10/27/2025 04:01:52 74.48, 107.44 87.39 3.09 26
2 10/27/2025 04:52:08 -74.43, -85.01 92.66 10/27/2025 04:51:12 -74.45, -84.96 92.63 2.49 56
3 10/29/2025 14:23:01 -74.50, 132.08 91.78 10/29/2025 14:23:14 -74.52, 132.14 91.77 2.14 13
4 10/29/2025 15:13:46 74.45, -60.46 88.17 10/29/2025 15:12:34 74.43, -60.38 88.17 2.62 72
5 10/31/2025 23:54:01 -74.92, -11.78 90.54 10/31/2025 23:55:11 -74.82, -10.20 90.72 47.19 70
6 11/01/2025 00:44:38 74.48, 156.73 88.99 11/01/2025 00:44:36 74.48, 156.66 88.99 2.19 2
7 11/01/2025 01:35:12 -74.01, -34.75 91.51 11/01/2025 01:34:03 -74.08, -36.57 91.37 56.10 69
8 11/03/2025 10:15:30 74.58, 13.77 89.85 11/03/2025 10:16:36 74.55, 13.77 89.81 3.17 66
9 11/03/2025 11:06:12 -74.49,-178.69 90.24 11/03/2025 11:05:56 -74.52,-178.64 90.21 3.13 16
10 11/05/2025 20:37:05 -74.59, 38.35 89.40 11/05/2025 20:37:57 -74.56, 38.41 89.44 3.21 52
11 11/05/2025 21:27:49 74.50,-154.10 90.51 11/05/2025 21:27:17 74.48,-154.11 90.50 1.71 32
12 11/08/2025 06:58:41 74.56, 63.03 91.29 11/08/2025 06:59:17 74.56, 63.00 91.28 0.93 36
13 11/08/2025 07:49:24 -74.51,-129.52 88.76 11/08/2025 07:48:37 -74.52,-129.40 88.75 3.80 47

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 10/26/2025
SNOs_Map_NOAA-21_TERRA_20251026.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 10/26/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA