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: 10/5/2025
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 10/05/2025 07:37:37 74.43, 53.60 79.42 10/05/2025 07:38:27 74.43, 53.68 79.40 2.26 50
2 10/05/2025 08:28:19 -74.36,-138.90 100.65 10/05/2025 08:27:49 -74.35,-138.84 100.66 2.16 30
3 10/07/2025 17:59:13 -74.43, 78.22 99.67 10/07/2025 17:59:56 -74.41, 78.21 99.70 1.78 43
4 10/07/2025 18:49:58 74.36,-114.30 80.27 10/07/2025 18:49:15 74.34,-114.29 80.25 2.81 43
5 10/10/2025 04:20:52 74.43, 102.79 81.25 10/10/2025 04:21:21 74.41, 102.80 81.22 2.52 29
6 10/10/2025 05:11:34 -74.36, -89.70 98.82 10/10/2025 05:10:42 -74.38, -89.61 98.80 3.38 52
7 10/12/2025 14:42:28 -74.44, 127.37 97.83 10/12/2025 14:42:48 -74.41, 127.40 97.87 3.14 20
8 10/12/2025 15:33:12 74.33, -65.03 82.06 10/12/2025 15:32:07 74.34, -65.09 82.08 2.41 65
9 10/15/2025 01:04:06 74.42, 152.02 83.05 10/15/2025 01:04:11 74.45, 152.07 83.07 3.29 5
10 10/15/2025 01:54:47 -74.30, -40.34 97.08 10/15/2025 01:53:34 -74.30, -40.59 97.05 7.65 73
11 10/17/2025 10:35:03 74.66, 8.65 84.19 10/17/2025 10:36:14 74.57, 9.28 84.05 21.46 71
12 10/17/2025 11:25:42 -74.44, 176.57 96.05 10/17/2025 11:25:37 -74.42, 176.60 96.07 2.66 5

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 10/5/2025
SNOs_Map_NOAA-21_TERRA_20251005.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 10/05/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA