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: 11/5/2025
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 11/08/2025 04:04:23 70.64, 115.24 87.16 11/08/2025 04:05:35 70.54, 115.75 87.07 21.75 72
2 11/08/2025 04:55:01 -70.34, -76.97 93.13 11/08/2025 04:55:07 -70.33, -76.94 93.15 1.91 6
3 11/08/2025 05:45:45 70.22, 90.53 86.76 11/08/2025 05:44:34 70.22, 90.56 86.76 1.17 71
4 11/10/2025 20:21:15 70.40,-128.60 87.68 11/10/2025 20:22:08 70.39,-128.60 87.67 0.89 53
5 11/10/2025 21:11:57 -70.31, 38.85 92.40 11/10/2025 21:11:38 -70.28, 38.88 92.43 3.05 19
6 11/10/2025 22:02:26 69.40,-152.46 86.70 11/10/2025 22:01:19 69.40,-154.70 86.70 87.47 67
7 11/13/2025 12:38:11 70.38, -12.79 88.38 11/13/2025 12:38:38 70.37, -12.74 88.38 1.75 27
8 11/13/2025 13:28:53 -70.29, 154.66 91.70 11/13/2025 13:28:08 -70.27, 154.74 91.72 3.48 45
9 11/16/2025 04:04:26 -70.69, -64.83 90.63 11/16/2025 04:05:37 -70.61, -64.16 90.71 26.25 71
10 11/16/2025 04:55:05 70.31, 103.09 89.00 11/16/2025 04:55:07 70.33, 103.08 89.02 2.61 2
11 11/16/2025 05:45:47 -70.22, -89.45 91.08 11/16/2025 05:44:37 -70.23, -89.44 91.08 1.09 70
12 11/18/2025 20:21:17 -70.43, 51.38 90.26 11/18/2025 20:22:09 -70.44, 51.46 90.25 3.26 52
13 11/18/2025 21:12:01 70.30,-141.12 89.64 11/18/2025 21:11:36 70.32,-141.06 89.65 2.79 25

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/5/2025
SNOs_Map_NPP_LANDSAT-9_20251106.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/05/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9