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: 1/3/2023
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 01/03/2023 06:33:41 -70.15,-101.93 87.07 01/03/2023 06:34:08 -70.17,-101.90 87.05 2.59 27
2 01/03/2023 07:24:25 70.02, 65.56 92.81 01/03/2023 07:23:36 70.01, 65.52 92.80 2.44 49
3 01/05/2023 21:59:56 70.24,-153.62 92.76 01/05/2023 22:01:07 70.23,-153.57 92.74 2.20 71
4 01/05/2023 22:50:37 -70.09, 13.92 87.40 01/05/2023 22:50:37 -70.12, 13.91 87.37 3.57 0
5 01/05/2023 23:41:19 69.87,-178.43 92.37 01/05/2023 23:40:06 69.91,-178.75 92.42 12.83 73
6 01/08/2023 14:16:53 70.19, -37.79 92.38 01/08/2023 14:17:37 70.16, -37.78 92.35 2.89 44
7 01/08/2023 15:07:34 -70.04, 129.76 87.78 01/08/2023 15:07:07 -70.06, 129.70 87.76 2.79 27
8 01/11/2023 05:43:20 -70.99, -90.63 87.15 01/11/2023 05:44:27 -70.90, -88.45 87.32 79.68 67
9 01/11/2023 06:33:50 70.15, 78.04 91.96 01/11/2023 06:34:06 70.13, 78.05 91.94 2.32 16
10 01/11/2023 07:24:32 -70.05,-114.49 88.15 01/11/2023 07:23:36 -70.03,-114.46 88.17 2.99 56
11 01/13/2023 22:00:03 -70.23, 26.39 88.39 01/13/2023 22:01:08 -70.19, 26.38 88.43 3.62 65
12 01/13/2023 22:50:47 70.12,-166.14 91.50 01/13/2023 22:50:34 70.13,-166.06 91.51 3.17 13
13 01/13/2023 23:41:22 -69.65, 1.88 89.01 01/13/2023 23:40:10 -69.70, 0.97 88.92 35.93 72
14 01/16/2023 14:16:59 -70.20, 142.20 88.90 01/16/2023 14:17:35 -70.18, 142.24 88.93 2.63 36
15 01/16/2023 15:07:42 70.04, -50.25 90.93 01/16/2023 15:07:02 70.06, -50.29 90.95 2.38 40

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/3/2023
SNOs_Map_NPP_LANDSAT-9_20230103.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/03/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9