Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 1/21/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 01/21/2025 20:12:53 73.77,-133.64 93.79 01/21/2025 20:14:01 73.64,-131.77 93.54 59.87 68
2 01/21/2025 21:03:26 -73.20, 34.98 86.85 01/21/2025 21:03:31 -73.21, 35.00 86.85 0.72 5
3 01/21/2025 21:54:05 72.87,-156.99 92.78 01/21/2025 21:52:54 72.94,-157.85 92.91 28.84 71
4 01/24/2025 07:25:09 73.25, 59.45 92.64 01/24/2025 07:25:56 73.26, 59.45 92.63 0.12 47
5 01/24/2025 08:15:52 -73.18,-133.08 87.45 01/24/2025 08:15:19 -73.19,-133.02 87.43 2.41 33
6 01/26/2025 17:47:06 -74.06, 82.13 87.05 01/26/2025 17:48:11 -73.99, 85.32 87.32 97.85 65
7 01/26/2025 18:37:35 73.25,-108.64 92.03 01/26/2025 18:37:43 73.24,-108.57 92.01 2.44 8
8 01/26/2025 19:28:17 -73.13, 58.94 88.12 01/26/2025 19:27:07 -73.13, 58.87 88.09 2.36 70
9 01/29/2025 04:59:16 -73.27, -84.11 88.58 01/29/2025 05:00:10 -73.30, -84.11 88.57 3.07 54
10 01/29/2025 05:50:00 73.20, 83.36 91.34 01/29/2025 05:49:30 73.18, 83.32 91.32 3.06 30
11 01/31/2025 16:11:41 -73.24, 107.86 89.29 01/31/2025 16:11:56 -73.24, 107.80 89.29 2.08 15
12 01/31/2025 17:02:25 73.17, -84.67 90.62 01/31/2025 17:01:15 73.17, -84.67 90.64 0.09 70
13 02/03/2025 02:33:23 73.29, 132.33 90.07 02/03/2025 02:34:17 73.29, 132.26 90.06 2.14 54
14 02/03/2025 03:24:06 -73.22, -60.19 90.03 02/03/2025 03:23:40 -73.24, -60.18 90.00 2.83 26

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 1/21/2025
SNOs_Map_NPP_TERRA_20250121.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 01/21/2025 in txt file.

Historial Predications of SNOs between NPP and TERRA