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: 8/30/2025
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 08/30/2025 22:51:35 69.51,-165.17 60.78 08/30/2025 22:50:26 69.61,-166.75 60.92 62.68 69
2 09/02/2025 13:27:21 70.30, -25.23 62.53 09/02/2025 13:27:52 70.28, -25.22 62.51 2.35 31
3 09/02/2025 14:18:02 -70.15, 142.31 117.61 09/02/2025 14:17:22 -70.16, 142.25 117.59 2.34 40
4 09/05/2025 04:53:41 -70.63, -77.31 116.16 09/05/2025 04:54:52 -70.53, -76.61 116.28 27.90 71
5 09/05/2025 05:44:20 70.25, 90.60 63.47 09/05/2025 05:44:22 70.26, 90.64 63.48 2.06 2
6 09/05/2025 06:35:02 -70.15,-101.93 116.62 09/05/2025 06:33:52 -70.15,-101.89 116.62 1.74 70
7 09/07/2025 21:10:36 -70.32, 38.94 115.48 09/07/2025 21:11:26 -70.32, 38.96 115.49 0.79 50
8 09/07/2025 22:01:20 70.21,-153.58 64.42 09/07/2025 22:00:53 70.22,-153.55 64.43 1.35 27
9 09/07/2025 22:51:45 -69.21, 15.22 116.59 09/07/2025 22:50:39 -69.23, 12.73 116.52 98.30 66
10 09/10/2025 12:37:08 71.13, -13.95 66.35 09/10/2025 12:38:15 71.01, -11.76 66.19 80.24 67
11 09/10/2025 13:27:36 -70.28, 154.75 114.51 09/10/2025 13:27:56 -70.30, 154.81 114.50 2.85 20
12 09/10/2025 14:18:20 70.18, -37.78 65.40 09/10/2025 14:17:23 70.19, -37.70 65.41 3.06 57
13 09/13/2025 04:53:53 70.32, 103.14 66.53 09/13/2025 04:54:56 70.35, 103.13 66.56 3.35 63
14 09/13/2025 05:44:36 -70.26, -89.45 113.52 09/13/2025 05:44:26 -70.25, -89.39 113.53 2.58 10
15 09/13/2025 06:35:11 69.68, 78.73 65.91 09/13/2025 06:34:00 69.75, 77.56 66.00 45.83 71

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/30/2025
SNOs_Map_NPP_LANDSAT-9_20250831.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/30/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9