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: 9/7/2025
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 09/07/2025 22:53:27 -74.40, 5.32 111.10 09/07/2025 22:54:03 -74.41, 5.32 111.09 1.44 36
2 09/07/2025 23:44:11 74.31, 172.86 68.82 09/07/2025 23:43:22 74.32, 172.79 68.85 2.53 49
3 09/10/2025 09:15:12 74.38, 29.92 69.80 09/10/2025 09:15:34 74.40, 29.87 69.81 2.55 22
4 09/10/2025 10:05:55 -74.32,-162.60 110.26 09/10/2025 10:04:56 -74.35,-162.59 110.22 3.32 59
5 09/12/2025 19:36:57 -74.39, 54.46 109.28 09/12/2025 19:37:09 -74.41, 54.44 109.27 1.69 12
6 09/12/2025 20:27:41 74.32,-138.03 70.65 09/12/2025 20:26:28 74.31,-138.11 70.66 2.74 73
7 09/15/2025 05:08:07 -74.86, -89.55 107.85 09/15/2025 05:09:16 -74.75, -87.85 108.05 50.85 69
8 09/15/2025 05:58:43 74.40, 79.01 71.66 09/15/2025 05:58:40 74.39, 78.97 71.65 1.73 3
9 09/15/2025 06:49:18 -73.94,-112.50 108.85 09/15/2025 06:48:09 -73.98,-114.28 108.70 55.05 69
10 09/17/2025 15:29:45 74.49, -63.98 72.67 09/17/2025 15:30:51 74.50, -63.88 72.66 3.02 66
11 09/17/2025 16:20:28 -74.41, 103.55 107.41 09/17/2025 16:20:14 -74.40, 103.56 107.42 1.24 14
12 09/20/2025 01:51:30 -74.51, -39.44 106.39 09/20/2025 01:52:25 -74.49, -39.34 106.42 3.54 55
13 09/20/2025 02:42:13 74.40, 128.16 73.51 09/20/2025 02:41:44 74.38, 128.08 73.50 2.98 29

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 9/7/2025
SNOs_Map_NPP_TERRA_20250907.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 09/07/2025 in txt file.

Historial Predications of SNOs between NPP and TERRA