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: 11/21/2025
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 11/22/2025 19:27:58 74.61,-124.41 95.00 11/22/2025 19:28:21 74.63,-124.43 95.03 2.93 23
2 11/22/2025 20:18:41 -74.55, 43.06 85.06 11/22/2025 20:17:42 -74.54, 43.02 85.06 1.95 59
3 11/25/2025 04:59:04 74.88, 92.09 95.80 11/25/2025 05:00:15 74.77, 92.87 95.64 25.81 71
4 11/25/2025 05:49:43 -74.62, -99.88 84.49 11/25/2025 05:49:37 -74.63, -99.81 84.49 2.38 6
5 11/25/2025 06:40:14 73.90, 69.27 94.74 11/25/2025 06:39:09 73.92, 66.26 94.89 92.73 65
6 11/27/2025 15:20:44 -74.65, 117.28 84.00 11/27/2025 15:21:33 -74.65, 117.21 84.01 2.37 49
7 11/27/2025 16:11:28 74.58, -75.20 95.93 11/27/2025 16:10:52 74.61, -75.21 95.97 3.50 36
8 11/30/2025 01:42:30 74.67, 141.81 96.45 11/30/2025 01:42:47 74.65, 141.86 96.42 2.25 17
9 11/30/2025 02:33:13 -74.59, -50.67 83.64 11/30/2025 02:32:08 -74.58, -50.66 83.64 1.65 65
10 12/02/2025 11:13:31 74.71, -1.07 96.87 12/02/2025 11:14:41 74.73, -0.99 96.87 2.91 70
11 12/02/2025 12:04:14 -74.63, 166.47 83.22 12/02/2025 12:04:02 -74.66, 166.51 83.19 3.33 12
12 12/04/2025 21:35:14 -74.68, 23.60 82.83 12/04/2025 21:35:56 -74.67, 23.51 82.84 2.86 42
13 12/04/2025 22:25:58 74.62,-168.93 97.11 12/04/2025 22:25:15 74.61,-168.97 97.11 1.39 43

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/21/2025
SNOs_Map_NOAA-21_TERRA_20251121.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/21/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA