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: 4/5/2025
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 04/06/2025 06:33:00 70.16, 78.10 63.54 04/06/2025 06:33:30 70.18, 78.09 63.56 3.19 30
2 04/06/2025 07:23:42 -70.09,-114.48 116.55 04/06/2025 07:23:00 -70.08,-114.43 116.56 2.42 42
3 04/08/2025 21:59:21 -70.52, 25.97 117.08 04/08/2025 22:00:32 -70.43, 26.67 117.20 27.78 71
4 04/08/2025 22:50:00 70.12,-166.09 62.49 04/08/2025 22:50:03 70.11,-166.15 62.48 2.76 3
5 04/08/2025 23:40:42 -70.05, 1.34 117.60 04/08/2025 23:39:32 -70.06, 1.41 117.58 2.83 70
6 04/11/2025 14:16:15 -70.23, 142.19 118.38 04/11/2025 14:17:06 -70.25, 142.26 118.37 3.53 51
7 04/11/2025 15:06:59 70.09, -50.29 61.47 04/11/2025 15:06:34 70.09, -50.32 61.47 1.45 25
8 04/11/2025 15:57:25 -69.17, 118.38 119.49 04/11/2025 15:56:18 -69.21, 116.12 119.39 89.22 67
9 04/14/2025 05:42:49 71.13, 89.15 61.61 04/14/2025 05:43:55 71.04, 91.68 61.44 91.85 66
10 04/14/2025 06:33:14 -70.16,-101.95 119.42 04/14/2025 06:33:39 -70.17,-101.99 119.42 1.58 25
11 04/14/2025 07:23:59 70.08, 65.48 60.49 04/14/2025 07:23:06 70.06, 65.50 60.46 2.88 53
12 04/16/2025 21:59:32 70.25,-153.64 59.72 04/16/2025 22:00:41 70.24,-153.66 59.71 1.13 69
13 04/16/2025 22:50:14 -70.16, 13.81 120.38 04/16/2025 22:50:11 -70.14, 13.83 120.41 2.53 3
14 04/16/2025 23:40:53 69.77,-178.29 59.21 04/16/2025 23:39:41 69.86,-178.91 59.32 26.07 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/5/2025
SNOs_Map_NPP_LANDSAT-9_20250405.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/05/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9