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: 11/8/2025
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 11/08/2025 06:58:53 74.57, 62.94 91.30 11/08/2025 06:59:16 74.58, 63.05 91.30 3.50 23
2 11/08/2025 07:49:35 -74.49,-129.51 88.79 11/08/2025 07:48:37 -74.48,-129.51 88.78 0.46 58
3 11/10/2025 16:30:02 74.94, -80.83 92.39 11/10/2025 16:31:12 74.82, -79.43 92.20 42.94 70
4 11/10/2025 17:20:38 -74.56, 87.53 88.03 11/10/2025 17:20:36 -74.57, 87.63 88.03 3.02 2
5 11/10/2025 18:11:12 73.96,-103.63 91.34 11/10/2025 18:10:05 74.03,-105.92 91.50 70.57 67
6 11/13/2025 02:51:40 -74.60, -55.32 87.33 11/13/2025 02:52:35 -74.62, -55.29 87.32 2.72 55
7 11/13/2025 03:42:25 74.55, 112.13 92.62 11/13/2025 03:41:55 74.55, 112.21 92.63 2.35 30
8 11/15/2025 13:13:27 74.59, -30.75 93.30 11/15/2025 13:13:54 74.57, -30.79 93.27 2.92 27
9 11/15/2025 14:04:10 -74.54, 136.71 86.76 11/15/2025 14:03:14 -74.53, 136.79 86.76 2.69 56
10 11/17/2025 22:44:37 75.04,-174.73 94.38 11/17/2025 22:45:46 74.92,-172.97 94.19 52.31 69
11 11/17/2025 23:35:12 -74.59, -6.18 86.11 11/17/2025 23:35:12 -74.58, -6.15 86.13 1.96 0
12 11/18/2025 00:25:47 74.06, 162.49 93.33 11/18/2025 00:24:39 74.13, 160.50 93.48 61.12 68
13 11/20/2025 09:06:14 -74.65,-149.09 85.48 11/20/2025 09:07:09 -74.65,-149.02 85.50 2.04 55
14 11/20/2025 09:56:58 74.57, 18.44 94.44 11/20/2025 09:56:29 74.56, 18.45 94.44 0.90 29

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/8/2025
SNOs_Map_NOAA-21_TERRA_20251108.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/08/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA