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: 8/23/2025
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 08/25/2025 13:26:48 -70.33, 154.83 120.28 08/25/2025 13:27:49 -70.32, 154.84 120.29 0.99 61
2 08/25/2025 14:17:32 70.20, -37.67 59.61 08/25/2025 14:17:16 70.22, -37.65 59.63 1.86 16
3 08/25/2025 15:08:04 -69.60, 130.57 121.01 08/25/2025 15:06:54 -69.67, 129.20 120.90 53.53 70
4 08/28/2025 05:43:41 -70.27, -89.29 119.41 08/28/2025 05:44:19 -70.27, -89.34 119.41 2.19 38
5 08/28/2025 06:34:25 70.15, 78.20 60.49 08/28/2025 06:33:46 70.17, 78.15 60.51 2.69 39
6 08/30/2025 21:10:02 70.83,-141.73 62.12 08/30/2025 21:11:12 70.70,-140.46 61.95 48.86 70
7 08/30/2025 22:00:35 -70.26, 26.50 118.46 08/30/2025 22:00:48 -70.26, 26.53 118.47 0.90 13
8 08/30/2025 22:51:19 70.15,-166.02 61.44 08/30/2025 22:50:15 70.15,-165.98 61.45 1.44 64
9 09/02/2025 13:26:46 70.31, -25.11 62.55 09/02/2025 13:27:47 70.34, -25.10 62.57 3.14 61
10 09/02/2025 14:17:28 -70.21, 142.37 117.55 09/02/2025 14:17:17 -70.23, 142.37 117.53 2.38 11
11 09/02/2025 15:08:01 69.58, -49.37 61.82 09/02/2025 15:06:52 69.63, -50.83 61.91 56.84 69
12 09/05/2025 05:43:38 70.27, 90.74 63.49 09/05/2025 05:44:15 70.29, 90.72 63.51 2.66 37
13 09/05/2025 06:34:20 -70.16,-101.77 116.61 09/05/2025 06:33:45 -70.19,-101.80 116.59 2.91 35

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/23/2025
SNOs_Map_NPP_LANDSAT-9_20250824.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/23/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9