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: 11/8/2025
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 11/10/2025 20:21:14 70.37,-128.56 87.65 11/10/2025 20:22:07 70.38,-128.61 87.66 2.02 53
2 11/10/2025 21:11:56 -70.29, 38.89 92.43 11/10/2025 21:11:37 -70.27, 38.87 92.44 1.74 19
3 11/10/2025 22:02:25 69.37,-152.43 86.68 11/10/2025 22:01:18 69.40,-154.71 86.69 89.23 67
4 11/13/2025 12:38:10 70.36, -12.76 88.36 11/13/2025 12:38:37 70.33, -12.80 88.33 3.28 27
5 11/13/2025 13:28:52 -70.28, 154.69 91.72 11/13/2025 13:28:06 -70.28, 154.76 91.71 2.62 46
6 11/16/2025 04:04:25 -70.63, -64.73 90.69 11/16/2025 04:05:36 -70.57, -64.21 90.75 20.52 71
7 11/16/2025 04:55:05 70.30, 103.11 88.99 11/16/2025 04:55:06 70.30, 103.03 88.98 2.91 1
8 11/16/2025 05:45:47 -70.22, -89.44 91.09 11/16/2025 05:44:36 -70.19, -89.49 91.12 3.37 71
9 11/18/2025 20:21:16 -70.38, 51.46 90.30 11/18/2025 20:22:07 -70.39, 51.41 90.29 2.33 51
10 11/18/2025 21:12:01 70.31,-141.12 89.64 11/18/2025 21:11:34 70.28,-141.11 89.61 3.28 27
11 11/18/2025 22:02:25 -69.28, 27.74 91.38 11/18/2025 22:01:19 -69.35, 25.24 91.32 98.57 66
12 11/21/2025 11:47:44 71.26, -1.55 91.19 11/21/2025 11:48:51 71.15, 0.83 91.08 86.03 67
13 11/21/2025 12:38:10 -70.34, 167.30 89.73 11/21/2025 12:38:34 -70.34, 167.22 89.74 2.75 24
14 11/21/2025 13:28:55 70.27, -25.28 90.21 11/21/2025 13:28:00 70.28, -25.22 90.21 2.50 55

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/8/2025
SNOs_Map_NPP_LANDSAT-9_20251110.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/08/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9