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: 10/25/2025
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 10/25/2025 20:21:04 70.37,-128.58 82.66 10/25/2025 20:22:03 70.39,-128.57 82.69 3.08 59
2 10/25/2025 21:11:46 -70.26, 38.90 97.43 10/25/2025 21:11:33 -70.28, 38.89 97.42 1.95 13
3 10/25/2025 22:02:19 69.58,-152.75 81.90 10/25/2025 22:01:10 69.62,-154.38 81.94 63.59 69
4 10/28/2025 12:38:01 70.35, -12.77 83.55 10/28/2025 12:38:30 70.37, -12.72 83.57 2.74 29
5 10/28/2025 13:28:43 -70.24, 154.71 96.55 10/28/2025 13:28:00 -70.25, 154.75 96.54 1.91 43
6 10/31/2025 04:04:16 -70.60, -64.71 95.34 10/31/2025 04:05:27 -70.52, -64.24 95.41 19.25 71
7 10/31/2025 04:54:56 70.29, 103.10 84.36 10/31/2025 04:54:56 70.30, 103.08 84.38 2.20 0
8 10/31/2025 05:45:38 -70.18, -89.42 95.73 10/31/2025 05:44:26 -70.20, -89.44 95.72 1.63 72
9 11/02/2025 20:21:09 -70.39, 51.40 94.70 11/02/2025 20:21:55 -70.38, 51.44 94.71 1.99 46
10 11/02/2025 21:11:53 70.29,-141.13 85.22 11/02/2025 21:11:22 70.26,-141.08 85.19 2.89 31
11 11/05/2025 11:47:34 71.03, -1.18 86.76 11/05/2025 11:48:42 70.90, 0.50 86.64 62.54 68
12 11/05/2025 12:38:05 -70.35, 167.24 93.92 11/05/2025 12:38:20 -70.36, 167.32 93.90 3.15 15
13 11/05/2025 13:28:49 70.24, -25.28 86.00 11/05/2025 13:27:47 70.25, -25.21 86.00 2.81 62

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 10/25/2025
SNOs_Map_NPP_LANDSAT-9_20251025.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 10/25/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9