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: 6/8/2025
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 06/09/2025 04:52:57 70.62, 102.59 47.62 06/09/2025 04:54:08 70.51, 103.40 47.48 32.46 71
2 06/09/2025 05:43:33 -70.19, -89.41 132.83 06/09/2025 05:43:42 -70.18, -89.46 132.85 2.59 9
3 06/09/2025 06:34:17 70.10, 78.04 47.07 06/09/2025 06:33:09 70.08, 78.05 47.06 2.26 68
4 06/11/2025 21:09:47 70.26,-141.07 47.06 06/11/2025 21:10:44 70.28,-141.07 47.07 1.73 57
5 06/11/2025 22:00:29 -70.15, 26.43 133.07 06/11/2025 22:00:14 -70.17, 26.41 133.05 2.30 15
6 06/11/2025 22:51:01 69.42,-165.18 46.18 06/11/2025 22:49:52 69.46,-166.93 46.28 68.68 69
7 06/14/2025 13:26:42 70.23, -25.24 46.88 06/14/2025 13:27:15 70.24, -25.24 46.89 2.01 33
8 06/14/2025 14:17:24 -70.11, 142.26 133.25 06/14/2025 14:16:45 -70.14, 142.23 133.22 3.03 39
9 06/17/2025 04:53:03 -70.75, -77.62 132.66 06/17/2025 04:54:13 -70.67, -76.38 132.79 46.53 70
10 06/17/2025 05:43:38 70.19, 90.59 46.75 06/17/2025 05:43:47 70.18, 90.54 46.74 2.05 9
11 06/17/2025 06:34:20 -70.08,-101.92 133.37 06/17/2025 06:33:17 -70.08,-101.97 133.37 2.11 63
12 06/19/2025 21:09:50 -70.25, 38.96 133.23 06/19/2025 21:10:51 -70.26, 38.89 133.23 2.55 61
13 06/19/2025 22:00:34 70.16,-153.59 46.68 06/19/2025 22:00:18 70.15,-153.62 46.67 1.90 16

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/8/2025
SNOs_Map_NPP_LANDSAT-9_20250608.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/08/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9