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: 11/2/2025
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 11/03/2025 10:15:30 74.57, 13.78 89.84 11/03/2025 10:16:36 74.55, 13.76 89.81 2.65 66
2 11/03/2025 11:06:12 -74.49,-178.69 90.24 11/03/2025 11:05:56 -74.51,-178.67 90.22 1.65 16
3 11/05/2025 20:37:04 -74.54, 38.48 89.46 11/05/2025 20:37:57 -74.55, 38.37 89.45 3.63 53
4 11/05/2025 21:27:49 74.49,-154.07 90.50 11/05/2025 21:27:17 74.48,-154.13 90.50 1.78 32
5 11/08/2025 06:58:41 74.54, 63.07 91.27 11/08/2025 06:59:17 74.55, 62.99 91.27 2.59 36
6 11/08/2025 07:49:24 -74.50,-129.50 88.77 11/08/2025 07:48:37 -74.51,-129.44 88.76 2.17 47
7 11/10/2025 17:20:16 -74.56, 87.64 88.03 11/10/2025 17:20:37 -74.56, 87.62 88.03 0.57 21
8 11/10/2025 18:11:00 74.47,-104.82 91.89 11/10/2025 18:09:57 74.48,-104.89 91.91 2.38 63
9 11/13/2025 02:51:20 -75.19, -56.85 86.68 11/13/2025 02:52:27 -75.10, -54.11 86.88 78.86 67
10 11/13/2025 03:41:52 74.54, 112.29 92.62 11/13/2025 03:41:56 74.56, 112.23 92.63 2.74 4
11 11/13/2025 04:32:31 -74.29, -79.75 87.65 11/13/2025 04:31:19 -74.36, -80.54 87.54 25.35 72
12 11/15/2025 13:12:44 74.61, -30.61 93.32 11/15/2025 13:13:55 74.61, -30.70 93.30 2.59 71
13 11/15/2025 14:03:27 -74.55, 136.86 86.74 11/15/2025 14:03:15 -74.57, 136.89 86.72 2.42 12

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/2/2025
SNOs_Map_NOAA-21_TERRA_20251103.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/02/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA