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: 4/11/2025
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 04/12/2025 13:07:45 73.95, -27.63 65.28 04/12/2025 13:08:56 73.84, -26.64 65.10 32.86 71
2 04/12/2025 13:58:22 -73.62, 140.48 115.11 04/12/2025 13:58:20 -73.63, 140.57 115.11 3.04 2
3 04/12/2025 14:48:57 73.05, -50.93 64.26 04/12/2025 14:47:48 73.14, -52.73 64.46 58.98 69
4 04/15/2025 00:20:07 73.60, 165.09 63.99 04/15/2025 00:20:17 73.61, 165.01 64.00 2.79 10
5 04/15/2025 01:10:50 -73.56, -27.51 116.07 04/15/2025 01:09:38 -73.56, -27.43 116.06 2.58 72
6 04/17/2025 10:41:52 -73.67,-170.49 116.81 04/17/2025 10:42:14 -73.68,-170.39 116.81 3.14 22
7 04/17/2025 11:32:36 73.56, -2.93 63.06 04/17/2025 11:31:35 73.55, -2.99 63.07 2.17 61
8 04/19/2025 21:03:38 73.68,-145.94 62.36 04/19/2025 21:04:10 73.66,-145.95 62.34 1.26 32
9 04/19/2025 21:54:20 -73.58, 21.60 117.77 04/19/2025 21:53:32 -73.58, 21.54 117.75 1.86 48
10 04/22/2025 07:25:22 -73.70,-121.42 118.45 04/22/2025 07:26:06 -73.71,-121.38 118.45 2.19 44
11 04/22/2025 08:16:06 73.60, 46.11 61.43 04/22/2025 08:15:26 73.62, 46.10 61.46 2.05 40
12 04/24/2025 17:47:07 73.69, -96.83 60.73 04/24/2025 17:48:00 73.70, -96.92 60.74 3.29 53
13 04/24/2025 18:37:50 -73.63, 70.62 119.35 04/24/2025 18:37:22 -73.64, 70.60 119.34 0.94 28

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 4/11/2025
SNOs_Map_NPP_TERRA_20250411.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 04/11/2025 in txt file.

Historial Predications of SNOs between NPP and TERRA