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: 9/25/2025
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 09/26/2025 12:37:23 70.35, -12.73 71.71 09/26/2025 12:38:30 70.38, -12.72 71.73 3.29 67
2 09/26/2025 13:28:05 -70.23, 154.76 108.40 09/26/2025 13:28:00 -70.26, 154.74 108.37 3.30 5
3 09/26/2025 14:18:43 69.82, -37.29 71.20 09/26/2025 14:17:32 69.89, -38.15 71.27 33.49 71
4 09/29/2025 04:54:22 70.32, 103.08 72.72 09/29/2025 04:55:00 70.32, 103.08 72.72 0.28 38
5 09/29/2025 05:45:04 -70.20, -89.42 107.39 09/29/2025 05:44:30 -70.21, -89.45 107.39 1.59 34
6 10/01/2025 20:20:45 -70.85, 50.66 105.72 10/01/2025 20:21:55 -70.71, 51.90 105.87 48.20 70
7 10/01/2025 21:11:20 70.30,-141.13 73.74 10/01/2025 21:11:28 70.27,-141.10 73.71 2.81 8
8 10/01/2025 22:02:02 -70.17, 26.38 106.38 10/01/2025 22:00:58 -70.16, 26.37 106.39 1.13 64
9 10/04/2025 12:37:35 -70.37, 167.20 105.17 10/04/2025 12:38:29 -70.35, 167.25 105.20 3.09 54
10 10/04/2025 13:28:18 70.24, -25.27 74.71 10/04/2025 13:27:56 70.24, -25.26 74.71 0.57 22
11 10/04/2025 14:18:46 -69.37, 143.34 106.15 10/04/2025 14:17:39 -69.42, 141.23 106.10 82.55 67
12 10/07/2025 04:04:07 71.29, 114.13 76.78 10/07/2025 04:05:12 71.20, 116.82 76.68 96.48 65
13 10/07/2025 04:54:33 -70.32, -76.95 104.20 10/07/2025 04:54:56 -70.33, -76.88 104.18 3.02 23
14 10/07/2025 05:45:16 70.19, 90.57 75.69 10/07/2025 05:44:24 70.17, 90.52 75.66 3.07 52

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 9/25/2025
SNOs_Map_NPP_LANDSAT-9_20250926.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 09/25/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9