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: 2/13/2023
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 02/14/2023 22:00:14 -70.23, 26.42 96.87 02/14/2023 22:01:09 -70.25, 26.40 96.86 2.71 55
2 02/14/2023 22:50:58 70.12,-166.10 83.01 02/14/2023 22:50:36 70.15,-166.10 83.04 3.64 22
3 02/14/2023 23:41:26 -69.28, 2.45 97.89 02/14/2023 23:40:18 -69.37, 0.47 97.70 78.58 68
4 02/17/2023 14:17:08 -70.19, 142.27 97.84 02/17/2023 14:17:36 -70.20, 142.22 97.83 2.78 28
5 02/17/2023 15:07:52 70.08, -50.25 82.03 02/17/2023 15:07:03 70.10, -50.28 82.06 2.68 49
6 02/20/2023 05:43:20 70.31, 90.54 81.35 02/20/2023 05:44:30 70.32, 90.65 81.35 4.27 70
7 02/20/2023 06:34:01 -70.16,-101.91 98.82 02/20/2023 06:34:01 -70.15,-101.96 98.83 1.96 0
8 02/20/2023 07:24:42 69.89, 65.81 80.89 02/20/2023 07:23:30 69.93, 65.38 80.96 17.12 72
9 02/22/2023 22:00:13 70.24,-153.57 80.31 02/22/2023 22:00:55 70.27,-153.53 80.32 2.85 42
10 02/22/2023 22:50:55 -70.14, 13.90 99.81 02/22/2023 22:50:25 -70.16, 13.94 99.80 2.21 30
11 02/25/2023 13:26:34 -70.92, 153.80 99.95 02/25/2023 13:27:43 -70.82, 155.54 100.14 64.58 69
12 02/25/2023 14:17:06 70.20, -37.71 79.27 02/25/2023 14:17:19 70.21, -37.71 79.28 1.41 13
13 02/25/2023 15:07:48 -70.09, 129.76 100.86 02/25/2023 15:06:49 -70.10, 129.77 100.84 0.85 59

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/13/2023
SNOs_Map_NPP_LANDSAT-9_20230213.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/13/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9