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: 11/13/2025
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 11/13/2025 03:42:24 74.50, 112.24 92.58 11/13/2025 03:41:55 74.52, 112.15 92.60 3.46 29
2 11/15/2025 13:13:27 74.61, -30.79 93.32 11/15/2025 13:13:52 74.61, -30.70 93.31 2.83 25
3 11/15/2025 14:04:09 -74.51, 136.79 86.79 11/15/2025 14:03:13 -74.51, 136.74 86.78 1.46 56
4 11/17/2025 22:44:35 74.97,-174.53 94.30 11/17/2025 22:45:45 74.85,-173.14 94.12 42.14 70
5 11/17/2025 23:35:11 -74.57, -6.13 86.13 11/17/2025 23:35:10 -74.55, -6.20 86.15 3.24 1
6 11/18/2025 00:25:45 73.99, 162.67 93.25 11/18/2025 00:24:38 74.06, 160.35 93.42 71.60 67
7 11/20/2025 09:06:13 -74.65,-149.08 85.49 11/20/2025 09:07:05 -74.65,-149.00 85.50 2.41 52
8 11/20/2025 09:56:57 74.56, 18.46 94.43 11/20/2025 09:56:25 74.57, 18.48 94.44 1.19 32
9 11/22/2025 19:27:58 74.61,-124.40 95.00 11/22/2025 19:28:20 74.62,-124.44 95.02 1.95 22
10 11/22/2025 20:18:41 -74.54, 43.09 85.07 11/22/2025 20:17:41 -74.53, 43.03 85.06 2.01 60
11 11/25/2025 04:59:01 74.81, 92.30 95.72 11/25/2025 05:00:12 74.73, 92.79 95.61 16.72 71
12 11/25/2025 05:49:41 -74.59, -99.79 84.52 11/25/2025 05:49:34 -74.59, -99.86 84.51 2.26 7

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/13/2025
SNOs_Map_NOAA-21_TERRA_20251113.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/13/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA