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: 11/14/2025
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 11/15/2025 13:13:27 74.60, -30.77 93.31 11/15/2025 13:13:52 74.62, -30.67 93.31 3.38 25
2 11/15/2025 14:04:09 -74.51, 136.80 86.79 11/15/2025 14:03:13 -74.51, 136.75 86.78 1.57 56
3 11/17/2025 22:44:36 75.00,-174.64 94.34 11/17/2025 22:45:45 74.88,-173.09 94.14 47.11 69
4 11/17/2025 23:35:11 -74.57, -6.11 86.14 11/17/2025 23:35:10 -74.57, -6.16 86.13 1.46 1
5 11/18/2025 00:25:46 74.03, 162.58 93.30 11/18/2025 00:24:38 74.08, 160.39 93.44 66.86 68
6 11/20/2025 09:06:13 -74.64,-149.05 85.50 11/20/2025 09:07:06 -74.64,-149.03 85.51 0.54 53
7 11/20/2025 09:56:57 74.55, 18.50 94.42 11/20/2025 09:56:26 74.56, 18.45 94.43 1.98 31
8 11/22/2025 19:27:58 74.63,-124.48 95.04 11/22/2025 19:28:20 74.63,-124.41 95.03 2.08 22
9 11/22/2025 20:18:41 -74.57, 43.01 85.03 11/22/2025 20:17:41 -74.55, 43.05 85.05 2.73 60
10 11/25/2025 04:59:02 74.83, 92.25 95.74 11/25/2025 05:00:14 74.72, 92.76 95.60 19.10 72
11 11/25/2025 05:49:42 -74.61, -99.85 84.50 11/25/2025 05:49:36 -74.59, -99.89 84.52 3.04 6
12 11/25/2025 06:40:12 73.85, 69.41 94.69 11/25/2025 06:39:07 73.92, 66.27 94.89 96.99 65
13 11/27/2025 15:20:43 -74.66, 117.27 83.99 11/27/2025 15:21:29 -74.69, 117.32 83.97 3.38 46
14 11/27/2025 16:11:27 74.59, -75.23 95.95 11/27/2025 16:10:49 74.59, -75.24 95.95 0.26 38

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/14/2025
SNOs_Map_NOAA-21_TERRA_20251115.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/14/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA