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: 11/5/2025
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 74.55, 63.00 91.28 11/08/2025 06:59:17 74.56, 63.00 91.28 1.15 24
2 11/08/2025 07:49:35 -74.46,-129.45 88.81 11/08/2025 07:48:38 -74.46,-129.55 88.80 3.05 57
3 11/10/2025 16:30:03 74.96, -80.90 92.41 11/10/2025 16:31:12 74.86, -79.33 92.24 46.95 69
4 11/10/2025 17:20:38 -74.54, 87.60 88.05 11/10/2025 17:20:37 -74.56, 87.61 88.03 2.37 1
5 11/10/2025 18:11:13 73.99,-103.69 91.37 11/10/2025 18:10:05 74.07,-105.83 91.54 66.10 68
6 11/13/2025 02:51:41 -74.61, -55.36 87.32 11/13/2025 02:52:36 -74.63, -55.27 87.32 2.92 55
7 11/13/2025 03:42:24 74.52, 112.21 92.59 11/13/2025 03:41:56 74.50, 112.10 92.58 3.84 28
8 11/15/2025 13:13:27 74.61, -30.78 93.31 11/15/2025 13:13:54 74.59, -30.73 93.29 2.11 27
9 11/15/2025 14:04:09 -74.50, 136.81 86.80 11/15/2025 14:03:15 -74.50, 136.72 86.79 2.56 54
10 11/17/2025 22:44:38 75.09,-174.88 94.43 11/17/2025 22:45:46 74.97,-172.86 94.23 59.44 68
11 11/17/2025 23:35:12 -74.59, -6.18 86.11 11/17/2025 23:35:13 -74.57, -6.16 86.13 2.06 1

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 11/5/2025
SNOs_Map_NOAA-21_TERRA_20251106.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 11/05/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA