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: 10/27/2025
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 10/28/2025 12:38:00 70.32, -12.74 83.52 10/28/2025 12:38:30 70.34, -12.77 83.54 1.77 30
2 10/28/2025 13:28:42 -70.22, 154.74 96.57 10/28/2025 13:28:00 -70.22, 154.70 96.57 1.41 42
3 10/31/2025 04:04:16 -70.58, -64.68 95.36 10/31/2025 04:05:28 -70.49, -64.29 95.44 17.10 72
4 10/31/2025 04:54:57 70.31, 103.05 84.39 10/31/2025 04:54:56 70.33, 103.12 84.41 3.25 1
5 10/31/2025 05:45:39 -70.21, -89.47 95.70 10/31/2025 05:44:26 -70.22, -89.41 95.70 2.55 73
6 11/02/2025 20:21:09 -70.37, 51.44 94.72 11/02/2025 20:21:56 -70.35, 51.40 94.73 2.16 47
7 11/02/2025 21:11:53 70.26,-141.09 85.19 11/02/2025 21:11:23 70.24,-141.12 85.17 2.39 30
8 11/05/2025 11:47:34 71.00, -1.14 86.73 11/05/2025 11:48:43 70.88, 0.47 86.62 59.57 69
9 11/05/2025 12:38:05 -70.32, 167.28 93.94 11/05/2025 12:38:21 -70.34, 167.28 93.92 2.08 16
10 11/05/2025 13:28:49 70.21, -25.24 85.97 11/05/2025 13:27:48 70.23, -25.24 85.98 1.38 61
11 11/08/2025 04:04:18 70.38, 115.64 86.91 11/08/2025 04:05:15 70.40, 115.64 86.92 1.94 57
12 11/08/2025 04:55:00 -70.29, -76.88 93.19 11/08/2025 04:54:45 -70.30, -76.88 93.18 1.15 15
13 11/08/2025 05:45:31 69.49, 91.63 86.04 11/08/2025 05:44:23 69.57, 89.75 86.11 73.69 68

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/27/2025
SNOs_Map_NPP_LANDSAT-9_20251027.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/27/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9