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: 11/7/2025
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 11/08/2025 04:04:23 70.65, 115.22 87.17 11/08/2025 04:05:34 70.58, 115.81 87.10 23.10 71
2 11/08/2025 04:55:00 -70.30, -76.91 93.17 11/08/2025 04:55:07 -70.30, -76.97 93.17 2.29 7
3 11/08/2025 05:45:44 70.18, 90.59 86.72 11/08/2025 05:44:34 70.20, 90.53 86.74 3.38 70
4 11/10/2025 20:21:15 70.41,-128.62 87.69 11/10/2025 20:22:07 70.42,-128.56 87.70 2.38 52
5 11/10/2025 21:11:56 -70.27, 38.91 92.44 11/10/2025 21:11:38 -70.25, 38.84 92.46 3.56 18
6 11/10/2025 22:02:25 69.36,-152.41 86.66 11/10/2025 22:01:18 69.43,-154.66 86.72 88.76 67
7 11/13/2025 12:38:10 70.34, -12.73 88.34 11/13/2025 12:38:38 70.33, -12.80 88.33 2.89 28
8 11/13/2025 13:28:52 -70.25, 154.72 91.74 11/13/2025 13:28:08 -70.23, 154.68 91.77 3.31 44
9 11/16/2025 04:04:26 -70.66, -64.77 90.67 11/16/2025 04:05:38 -70.55, -64.25 90.78 22.70 72
10 11/16/2025 04:55:06 70.33, 103.07 89.01 11/16/2025 04:55:07 70.33, 103.07 89.01 0.24 1
11 11/16/2025 05:45:48 -70.24, -89.48 91.07 11/16/2025 05:44:37 -70.23, -89.44 91.09 2.28 71
12 11/18/2025 20:21:16 -70.39, 51.44 90.29 11/18/2025 20:22:08 -70.41, 51.43 90.27 1.95 52
13 11/18/2025 21:12:00 70.27,-141.06 89.60 11/18/2025 21:11:35 70.29,-141.09 89.63 2.90 25

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/7/2025
SNOs_Map_NPP_LANDSAT-9_20251107.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/07/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9