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: 8/4/2025
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 08/04/2025 04:53:20 -71.16, -78.19 125.97 08/04/2025 04:54:27 -71.07, -75.76 126.16 87.92 67
2 08/04/2025 05:43:49 70.24, 90.64 53.06 08/04/2025 05:44:07 70.26, 90.66 53.08 3.03 18
3 08/04/2025 06:34:30 -70.13,-101.86 127.05 08/04/2025 06:33:37 -70.15,-101.86 127.02 2.68 53
4 08/06/2025 21:10:00 -70.39, 38.88 126.07 08/06/2025 21:11:12 -70.35, 39.02 126.13 6.83 72
5 08/06/2025 22:00:43 70.19,-153.51 53.74 08/06/2025 22:00:40 70.19,-153.57 53.74 2.30 3
6 08/06/2025 22:51:23 -70.03, 14.07 126.43 08/06/2025 22:50:10 -70.08, 13.91 126.36 8.57 73
7 08/09/2025 13:26:52 -70.29, 154.81 125.41 08/09/2025 13:27:43 -70.32, 154.85 125.40 2.82 51
8 08/09/2025 14:17:36 70.16, -37.67 54.46 08/09/2025 14:17:11 70.16, -37.74 54.47 2.82 25
9 08/09/2025 15:08:02 -69.24, 131.00 126.48 08/09/2025 15:06:55 -69.28, 128.69 126.36 91.12 67
10 08/12/2025 05:43:46 -70.26, -89.35 124.66 08/12/2025 05:44:15 -70.27, -89.35 124.65 1.41 29
11 08/12/2025 06:34:31 70.18, 78.08 55.27 08/12/2025 06:33:42 70.16, 78.14 55.26 2.72 49
12 08/14/2025 21:10:03 70.56,-141.37 56.47 08/14/2025 21:11:14 70.47,-140.81 56.35 23.43 71
13 08/14/2025 22:00:40 -70.23, 26.48 123.87 08/14/2025 22:00:47 -70.21, 26.44 123.90 2.69 7
14 08/14/2025 22:51:24 70.10,-166.01 56.01 08/14/2025 22:50:14 70.09,-166.08 56.01 2.45 70
15 08/17/2025 13:26:52 70.28, -25.14 57.02 08/17/2025 13:27:48 70.28, -25.21 57.01 2.59 56
16 08/17/2025 14:17:34 -70.20, 142.31 123.06 08/17/2025 14:17:18 -70.18, 142.28 123.08 2.20 16
17 08/17/2025 15:08:05 69.39, -49.17 56.11 08/17/2025 15:06:57 69.41, -51.15 56.20 77.30 68

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/4/2025
SNOs_Map_NPP_LANDSAT-9_20250804.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/04/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9