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: 5/31/2025
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 06/01/2025 04:52:54 -70.77, -77.66 131.37 06/01/2025 04:54:04 -70.69, -76.34 131.49 48.97 70
2 06/01/2025 05:43:29 70.21, 90.56 48.04 06/01/2025 05:43:38 70.21, 90.60 48.05 1.67 9
3 06/01/2025 06:34:11 -70.09,-101.95 132.09 06/01/2025 06:33:08 -70.10,-101.94 132.08 0.49 63
4 06/03/2025 21:09:42 -70.29, 38.89 132.21 06/03/2025 21:10:40 -70.27, 38.92 132.23 2.10 58
5 06/03/2025 22:00:25 70.15,-153.58 47.65 06/03/2025 22:00:07 70.17,-153.58 47.67 2.87 18
6 06/03/2025 22:50:55 -69.45, 14.78 133.08 06/03/2025 22:49:46 -69.51, 13.13 132.98 64.63 69
7 06/06/2025 13:26:37 -70.23, 154.75 132.55 06/06/2025 13:27:08 -70.21, 154.73 132.57 2.10 31
8 06/06/2025 14:17:20 70.09, -37.72 47.30 06/06/2025 14:16:35 70.11, -37.78 47.33 2.80 45
9 06/09/2025 04:52:53 70.41, 102.93 47.40 06/09/2025 04:54:05 70.35, 103.19 47.33 11.60 72
10 06/09/2025 05:43:33 -70.18, -89.40 132.84 06/09/2025 05:43:36 -70.19, -89.42 132.84 1.07 3
11 06/09/2025 06:34:16 70.04, 78.12 47.02 06/09/2025 06:33:03 70.08, 78.08 47.06 4.55 73
12 06/11/2025 21:09:47 70.26,-141.07 47.06 06/11/2025 21:10:34 70.25,-141.07 47.04 1.40 47
13 06/11/2025 22:00:29 -70.14, 26.44 133.08 06/11/2025 22:00:04 -70.14, 26.41 133.07 1.29 25

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/31/2025
SNOs_Map_NPP_LANDSAT-9_20250531.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 05/31/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9