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: 8/2/2025
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, -78.18 125.98 08/04/2025 04:54:27 -71.07, -75.75 126.16 87.86 67
2 08/04/2025 05:43:49 70.23, 90.65 53.05 08/04/2025 05:44:07 70.26, 90.67 53.08 3.34 18
3 08/04/2025 06:34:30 -70.12,-101.86 127.06 08/04/2025 06:33:37 -70.15,-101.86 127.02 3.54 53
4 08/06/2025 21:10:00 -70.38, 38.89 126.07 08/06/2025 21:11:12 -70.35, 39.02 126.13 6.27 72
5 08/06/2025 22:00:43 70.19,-153.50 53.74 08/06/2025 22:00:40 70.19,-153.57 53.73 2.52 3
6 08/06/2025 22:51:23 -70.02, 14.08 126.43 08/06/2025 22:50:10 -70.08, 13.91 126.36 9.15 73
7 08/09/2025 13:26:52 -70.29, 154.82 125.42 08/09/2025 13:27:43 -70.31, 154.84 125.40 2.71 51
8 08/09/2025 14:17:37 70.20, -37.74 54.51 08/09/2025 14:17:10 70.20, -37.67 54.51 2.58 27
9 08/09/2025 15:08:02 -69.24, 131.01 126.49 08/09/2025 15:06:55 -69.27, 128.68 126.36 91.78 67
10 08/12/2025 05:43:46 -70.25, -89.33 124.67 08/12/2025 05:44:15 -70.25, -89.37 124.67 1.44 29
11 08/12/2025 06:34:31 70.17, 78.10 55.26 08/12/2025 06:33:42 70.14, 78.12 55.24 2.86 49
12 08/14/2025 21:10:03 70.55,-141.36 56.46 08/14/2025 21:11:14 70.44,-140.85 56.33 22.56 71
13 08/14/2025 22:00:40 -70.21, 26.50 123.89 08/14/2025 22:00:46 -70.23, 26.48 123.87 2.51 6
14 08/14/2025 22:51:25 70.14,-166.08 56.05 08/14/2025 22:50:13 70.12,-166.04 56.04 2.47 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/2/2025
SNOs_Map_NPP_LANDSAT-9_20250802.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/02/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9