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: 8/5/2025
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 08/06/2025 21:10:00 -70.41, 38.84 126.04 08/06/2025 21:11:11 -70.37, 39.05 126.10 9.32 71
2 08/06/2025 22:00:43 70.22,-153.55 53.77 08/06/2025 22:00:39 70.22,-153.53 53.76 0.68 4
3 08/06/2025 22:51:23 -70.05, 14.03 126.40 08/06/2025 22:50:10 -70.05, 13.87 126.39 6.11 73
4 08/09/2025 13:26:52 -70.27, 154.85 125.44 08/09/2025 13:27:44 -70.28, 154.80 125.43 2.73 52
5 08/09/2025 14:17:37 70.18, -37.70 54.49 08/09/2025 14:17:11 70.18, -37.71 54.49 0.16 26
6 08/09/2025 15:08:02 -69.22, 131.04 126.51 08/09/2025 15:06:55 -69.30, 128.72 126.34 91.87 67
7 08/12/2025 05:43:47 -70.28, -89.39 124.63 08/12/2025 05:44:15 -70.29, -89.32 124.63 2.62 28
8 08/12/2025 06:34:31 70.15, 78.13 55.24 08/12/2025 06:33:43 70.12, 78.09 55.22 2.82 48
9 08/14/2025 21:10:02 70.53,-141.32 56.44 08/14/2025 21:11:14 70.43,-140.86 56.31 20.52 72
10 08/14/2025 22:00:40 -70.25, 26.45 123.85 08/14/2025 22:00:46 -70.22, 26.46 123.88 3.26 6
11 08/14/2025 22:51:24 70.12,-166.04 56.03 08/14/2025 22:50:13 70.11,-166.06 56.03 1.17 71
12 08/17/2025 13:26:52 70.30, -25.17 57.04 08/17/2025 13:27:47 70.29, -25.20 57.02 1.56 55
13 08/17/2025 14:17:33 -70.17, 142.36 123.09 08/17/2025 14:17:17 -70.19, 142.29 123.07 3.32 16

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/5/2025
SNOs_Map_NPP_LANDSAT-9_20250805.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/05/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9