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: 9/20/2025
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 09/22/2025 12:13:14 74.47, -14.76 74.50 09/22/2025 12:13:57 74.47, -14.83 74.50 2.13 43
2 09/22/2025 13:03:57 -74.39, 152.75 105.57 09/22/2025 13:03:19 -74.42, 152.70 105.54 3.12 38
3 09/24/2025 22:34:59 -74.49, 9.75 104.54 09/24/2025 22:35:30 -74.50, 9.80 104.54 1.84 31
4 09/24/2025 23:25:43 74.42, 177.24 75.41 09/24/2025 23:24:49 74.40, 177.25 75.40 2.00 54
5 09/27/2025 08:56:44 74.48, 34.34 76.39 09/27/2025 08:57:00 74.47, 34.29 76.38 2.15 16
6 09/27/2025 09:47:27 -74.40,-158.13 103.69 09/27/2025 09:46:22 -74.41,-158.17 103.67 1.76 65
7 09/29/2025 18:27:55 75.03,-109.91 77.92 09/29/2025 18:29:03 74.92,-107.71 77.71 64.70 68
8 09/29/2025 19:18:29 -74.51, 58.84 102.65 09/29/2025 19:18:32 -74.50, 58.95 102.66 3.26 3
9 09/29/2025 20:09:06 74.11,-132.81 76.93 09/29/2025 20:07:56 74.15,-134.19 77.04 42.30 70
10 10/02/2025 04:49:30 -74.58, -84.08 101.65 10/02/2025 04:50:42 -74.57, -83.99 101.67 2.83 72
11 10/02/2025 05:40:13 74.47, 83.51 78.25 10/02/2025 05:40:01 74.48, 83.47 78.26 1.62 12
12 10/04/2025 15:11:14 74.55, -59.43 79.25 10/04/2025 15:12:11 74.53, -59.51 79.23 2.92 57
13 10/04/2025 16:01:58 -74.50, 108.00 100.79 10/04/2025 16:01:33 -74.47, 108.02 100.82 3.73 25

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_NPP_TERRA_20250921.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between NPP and TERRA