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: 11/7/2025
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 74.56, 62.98 91.29 11/08/2025 06:59:17 74.55, 62.97 91.27 1.18 24
2 11/08/2025 07:49:35 -74.47,-129.48 88.80 11/08/2025 07:48:37 -74.50,-129.47 88.77 3.20 58
3 11/10/2025 16:30:03 74.98, -80.93 92.43 11/10/2025 16:31:12 74.84, -79.37 92.22 47.69 69
4 11/10/2025 17:20:38 -74.55, 87.57 88.04 11/10/2025 17:20:37 -74.54, 87.57 88.05 0.85 1
5 11/10/2025 18:11:13 74.00,-103.72 91.38 11/10/2025 18:10:05 74.05,-105.87 91.52 65.88 68
6 11/13/2025 02:51:40 -74.58, -55.28 87.35 11/13/2025 02:52:36 -74.61, -55.32 87.33 2.78 56
7 11/13/2025 03:42:25 74.53, 112.16 92.61 11/13/2025 03:41:56 74.53, 112.18 92.61 0.38 29
8 11/15/2025 13:13:27 74.59, -30.73 93.29 11/15/2025 13:13:55 74.57, -30.79 93.27 2.36 28
9 11/15/2025 14:04:10 -74.53, 136.74 86.77 11/15/2025 14:03:15 -74.53, 136.79 86.76 1.57 55
10 11/17/2025 22:44:37 75.08,-174.85 94.42 11/17/2025 22:45:45 75.00,-172.80 94.25 59.67 68
11 11/17/2025 23:35:11 -74.58, -6.16 86.12 11/17/2025 23:35:12 -74.60, -6.10 86.11 2.30 1
12 11/18/2025 00:25:47 74.11, 162.39 93.38 11/18/2025 00:24:38 74.20, 160.66 93.55 53.59 69
13 11/20/2025 09:06:13 -74.65,-149.08 85.49 11/20/2025 09:07:10 -74.64,-149.05 85.51 1.13 57
14 11/20/2025 09:56:57 74.57, 18.45 94.44 11/20/2025 09:56:30 74.55, 18.42 94.43 1.65 27

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/7/2025
SNOs_Map_NOAA-21_TERRA_20251107.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/07/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA