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: 1/20/2023
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 01/21/2023 22:00:08 70.19,-153.57 90.00 01/21/2023 22:00:55 70.18,-153.60 89.98 1.98 47
2 01/21/2023 22:50:50 -70.10, 13.89 90.11 01/21/2023 22:50:24 -70.12, 13.94 90.09 3.06 26
3 01/24/2023 13:26:34 -71.00, 153.58 89.76 01/24/2023 13:27:41 -70.90, 155.72 89.95 78.44 67
4 01/24/2023 14:17:04 70.16, -37.75 89.35 01/24/2023 14:17:20 70.13, -37.77 89.32 3.37 16
5 01/24/2023 15:07:46 -70.07, 129.72 90.76 01/24/2023 15:06:49 -70.08, 129.78 90.75 2.60 57
6 01/27/2023 05:43:15 -70.20, -89.34 91.27 01/27/2023 05:44:17 -70.21, -89.41 91.27 2.95 62
7 01/27/2023 06:33:59 70.09, 78.14 88.61 01/27/2023 06:33:44 70.10, 78.08 88.62 2.41 15
8 01/27/2023 07:24:32 -69.52,-113.69 92.00 01/27/2023 07:23:22 -69.55,-115.05 91.91 53.11 70
9 01/29/2023 22:00:10 -70.19, 26.45 91.98 01/29/2023 22:00:39 -70.19, 26.46 91.99 0.39 29
10 01/29/2023 22:50:54 70.08,-166.08 87.90 01/29/2023 22:50:06 70.07,-166.06 87.89 1.66 48
11 02/01/2023 13:26:23 70.24, -25.17 87.35 02/01/2023 13:27:32 70.22, -25.21 87.32 2.22 69
12 02/01/2023 14:17:05 -70.13, 142.31 92.78 02/01/2023 14:17:02 -70.12, 142.27 92.80 2.45 3
13 02/01/2023 15:07:44 69.77, -49.83 86.83 02/01/2023 15:06:32 69.83, -50.48 86.93 26.02 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/20/2023
SNOs_Map_NPP_LANDSAT-9_20230120.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/20/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9