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: 11/26/2025
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 11/26/2025 20:21:35 70.39,-128.61 91.39 11/26/2025 20:22:05 70.39,-128.59 91.38 0.92 30
2 11/26/2025 21:12:16 -70.28, 38.89 88.73 11/26/2025 21:11:35 -70.28, 38.87 88.73 0.70 41
3 11/29/2025 11:47:55 -70.66, 179.41 87.89 11/29/2025 11:49:06 -70.59, 179.94 87.96 20.64 71
4 11/29/2025 12:38:36 70.35, -12.79 91.82 11/29/2025 12:38:36 70.33, -12.81 91.79 3.17 0
5 11/29/2025 13:29:17 -70.23, 154.71 88.30 11/29/2025 13:28:06 -70.21, 154.66 88.32 3.07 71
6 12/02/2025 04:04:52 -70.41, -64.43 87.72 12/02/2025 04:05:39 -70.39, -64.48 87.74 2.64 47
7 12/02/2025 04:55:37 70.32, 103.02 92.20 12/02/2025 04:55:06 70.29, 103.01 92.17 3.47 31
8 12/04/2025 19:31:22 71.03,-117.01 93.28 12/04/2025 19:32:31 70.88,-115.50 93.12 57.50 69
9 12/04/2025 20:21:53 -70.39, 51.37 87.37 12/04/2025 20:22:08 -70.39, 51.39 87.37 1.05 15
10 12/04/2025 21:12:37 70.29,-141.18 92.54 12/04/2025 21:11:34 70.28,-141.12 92.53 2.93 63
11 12/07/2025 11:48:11 70.44, -0.28 93.00 12/07/2025 11:49:06 70.46, -0.25 93.02 2.51 55
12 12/07/2025 12:38:53 -70.37, 167.16 87.08 12/07/2025 12:38:36 -70.35, 167.23 87.09 2.92 17
13 12/07/2025 13:29:23 69.48, -24.20 92.05 12/07/2025 13:28:16 69.53, -26.29 92.10 81.46 67

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/26/2025
SNOs_Map_NPP_LANDSAT-9_20251126.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/26/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9