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: 10/11/2025
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 10/12/2025 12:37:45 70.35, -12.77 77.85 10/12/2025 12:38:36 70.33, -12.80 77.83 2.17 51
2 10/12/2025 13:28:27 -70.23, 154.73 102.26 10/12/2025 13:28:06 -70.22, 154.67 102.27 2.52 21
3 10/12/2025 14:18:54 69.23, -36.48 76.77 10/12/2025 14:17:48 69.29, -38.97 76.81 98.07 66
4 10/15/2025 04:54:43 70.33, 103.03 78.83 10/15/2025 04:55:06 70.32, 103.07 78.82 1.64 23
5 10/15/2025 05:45:25 -70.21, -89.47 101.28 10/15/2025 05:44:36 -70.22, -89.46 101.28 0.84 49
6 10/17/2025 20:20:57 -70.41, 51.36 100.13 10/17/2025 20:22:09 -70.40, 51.41 100.14 2.40 72
7 10/17/2025 21:11:40 70.27,-141.11 79.75 10/17/2025 21:11:36 70.29,-141.10 79.77 2.43 4
8 10/17/2025 22:02:20 -70.05, 26.55 100.47 10/17/2025 22:01:08 -70.08, 26.22 100.44 13.03 72
9 10/20/2025 12:37:53 -70.36, 167.21 99.21 10/20/2025 12:38:38 -70.34, 167.21 99.23 1.60 45
10 10/20/2025 13:28:36 70.22, -25.26 80.66 10/20/2025 13:28:05 70.23, -25.31 80.67 2.51 31
11 10/23/2025 04:04:19 71.01, 114.60 82.38 10/23/2025 04:05:28 70.90, 116.31 82.28 63.01 69
12 10/23/2025 04:54:50 -70.31, -76.95 98.31 10/23/2025 04:55:07 -70.31, -76.95 98.31 0.13 17
13 10/23/2025 05:45:34 70.22, 90.50 81.62 10/23/2025 05:44:34 70.20, 90.53 81.59 3.13 60

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/11/2025
SNOs_Map_NPP_LANDSAT-9_20251011.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/11/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9