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: 11/4/2025
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 11/05/2025 20:37:05 -74.57, 38.40 89.42 11/05/2025 20:37:57 -74.57, 38.41 89.44 0.51 52
2 11/05/2025 21:27:50 74.52,-154.16 90.54 11/05/2025 21:27:17 74.50,-154.09 90.51 3.24 33
3 11/08/2025 06:58:42 74.57, 62.98 91.30 11/08/2025 06:59:17 74.57, 63.02 91.29 1.39 35
4 11/08/2025 07:49:24 -74.49,-129.46 88.79 11/08/2025 07:48:38 -74.47,-129.53 88.79 2.47 46
5 11/10/2025 17:20:17 -74.59, 87.55 87.99 11/10/2025 17:20:37 -74.57, 87.65 88.02 3.53 20
6 11/10/2025 18:11:01 74.50,-104.90 91.92 11/10/2025 18:09:57 74.50,-104.85 91.93 1.57 64
7 11/13/2025 02:51:20 -75.22, -56.95 86.64 11/13/2025 02:52:26 -75.11, -54.08 86.87 82.59 66
8 11/13/2025 03:41:52 74.57, 112.21 92.65 11/13/2025 03:41:55 74.57, 112.27 92.65 1.83 3
9 11/13/2025 04:32:30 -74.27, -79.70 87.67 11/13/2025 04:31:18 -74.38, -80.51 87.52 26.95 72
10 11/15/2025 13:12:44 74.64, -30.69 93.35 11/15/2025 13:13:54 74.62, -30.66 93.32 1.99 70
11 11/15/2025 14:03:26 -74.53, 136.91 86.76 11/15/2025 14:03:15 -74.54, 136.80 86.76 3.21 11
12 11/17/2025 23:34:18 -74.61, -5.99 86.09 11/17/2025 23:35:13 -74.62, -6.05 86.09 2.40 55
13 11/18/2025 00:25:02 74.54, 161.51 93.84 11/18/2025 00:24:33 74.53, 161.42 93.85 2.74 29

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/4/2025
SNOs_Map_NOAA-21_TERRA_20251104.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/04/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA