Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/23/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 06/23/2025 21:35:41 -70.22, 32.64 133.24 06/23/2025 21:35:13 -70.23, 32.66 133.22 1.40 28
2 06/23/2025 22:25:08 70.12,-159.86 46.67 06/23/2025 22:25:57 70.12,-159.87 46.67 0.48 49
3 06/26/2025 13:02:41 70.34, -18.94 46.96 06/26/2025 13:01:28 70.37, -19.10 47.00 6.68 73
4 06/26/2025 13:52:12 -70.18, 148.46 133.20 06/26/2025 13:52:08 -70.17, 148.54 133.21 3.24 4
5 06/26/2025 14:41:39 70.07, -44.05 46.70 06/26/2025 14:42:52 70.06, -43.99 46.68 3.01 73
6 06/29/2025 05:19:12 70.28, 96.86 47.03 06/29/2025 05:18:22 70.25, 96.86 47.01 3.55 50
7 06/29/2025 06:08:42 -70.18, -95.66 133.07 06/29/2025 06:09:04 -70.16, -95.67 133.10 2.67 22
8 07/01/2025 21:35:42 70.27,-147.28 47.19 07/01/2025 21:35:18 70.25,-147.35 47.18 3.60 24
9 07/01/2025 22:25:13 -70.11, 20.12 132.96 07/01/2025 22:25:59 -70.10, 20.19 132.98 3.10 46
10 07/04/2025 13:02:44 -70.35, 161.08 132.51 07/04/2025 13:01:30 -70.41, 160.86 132.44 9.96 74
11 07/04/2025 13:52:12 70.18, -31.52 47.34 07/04/2025 13:52:12 70.19, -31.49 47.34 1.38 0
12 07/04/2025 14:41:42 -70.09, 135.97 132.76 07/04/2025 14:42:54 -70.10, 135.97 132.76 1.13 72

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 6/23/2025
SNOs_Map_LANDSAT-8_NPP_20250623.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 06/23/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP