Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 3/27/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 03/29/2025 06:32:29 -70.20,-101.86 113.33 03/29/2025 06:33:31 -70.18,-101.91 113.36 2.80 62
2 03/29/2025 07:23:13 70.06, 65.66 66.52 03/29/2025 07:22:58 70.08, 65.59 66.53 3.01 15
3 03/29/2025 08:13:46 -69.53,-126.22 114.06 03/29/2025 08:12:35 -69.58,-127.46 113.96 48.68 71
4 03/31/2025 22:49:18 -70.18, 13.97 114.39 03/31/2025 22:49:57 -70.21, 14.02 114.38 3.35 39
5 03/31/2025 23:40:02 70.05,-178.51 65.46 03/31/2025 23:39:25 70.04,-178.57 65.46 2.31 37
6 04/03/2025 14:15:36 70.83, -38.58 65.27 04/03/2025 14:16:45 70.71, -36.99 65.09 59.74 69
7 04/03/2025 15:06:07 -70.18, 129.78 115.43 04/03/2025 15:06:23 -70.16, 129.84 115.45 3.11 16
8 04/03/2025 15:56:51 70.05, -62.72 64.43 04/03/2025 15:55:50 70.05, -62.67 64.43 1.68 61
9 04/06/2025 06:32:13 70.22, 78.21 63.60 04/06/2025 06:33:18 70.20, 78.16 63.58 2.35 65
10 04/06/2025 07:22:54 -70.09,-114.27 116.55 04/06/2025 07:22:48 -70.10,-114.35 116.54 3.08 6
11 04/06/2025 08:13:31 69.60, 53.77 62.93 04/06/2025 08:12:21 69.65, 52.67 63.02 43.19 70
12 04/08/2025 22:49:00 70.20,-165.96 62.58 04/08/2025 22:49:40 70.17,-165.98 62.54 3.15 40
13 04/08/2025 23:39:41 -70.07, 1.56 117.58 04/08/2025 23:39:10 -70.07, 1.51 117.58 2.14 31

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/27/2025
SNOs_Map_NPP_LANDSAT-9_20250327.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/27/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9