Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 10/9/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 10/11/2025 04:30:15 70.37, 109.31 77.37 10/11/2025 04:29:16 70.36, 109.33 77.36 1.87 59
2 10/11/2025 05:19:45 -70.26, -83.22 102.74 10/11/2025 05:19:58 -70.24, -83.17 102.76 3.04 13
3 10/11/2025 06:09:23 69.55, 83.44 76.57 10/11/2025 06:10:31 69.56, 85.16 76.59 67.06 68
4 10/13/2025 20:46:45 70.33,-134.86 78.33 10/13/2025 20:46:14 70.34,-134.87 78.34 0.31 31
5 10/13/2025 21:36:15 -70.22, 32.61 101.77 10/13/2025 21:36:56 -70.22, 32.64 101.77 1.29 41
6 10/16/2025 12:13:45 -70.54, 173.68 100.48 10/16/2025 12:12:32 -70.62, 173.14 100.41 21.96 73
7 10/16/2025 13:03:15 70.27, -19.08 79.26 10/16/2025 13:03:11 70.27, -19.00 79.26 3.02 4
8 10/16/2025 13:52:44 -70.22, 148.48 100.79 10/16/2025 13:53:54 -70.20, 148.43 100.80 2.71 70
9 10/19/2025 04:30:16 -70.34, -70.73 99.71 10/19/2025 04:29:24 -70.35, -70.67 99.70 2.42 52
10 10/19/2025 05:19:42 70.29, 96.84 80.25 10/19/2025 05:20:08 70.27, 96.78 80.23 3.12 26
11 10/19/2025 06:09:28 -69.30, -96.89 100.73 10/19/2025 06:10:34 -69.30, -94.46 100.72 95.48 66
12 10/21/2025 19:57:01 71.15,-121.24 82.06 10/21/2025 19:55:54 71.21,-123.63 82.11 86.00 67
13 10/21/2025 20:46:44 -70.34, 45.15 98.76 10/21/2025 20:46:22 -70.36, 45.10 98.74 2.76 22
14 10/21/2025 21:36:11 70.23,-147.37 81.15 10/21/2025 21:37:05 70.22,-147.37 81.14 0.88 54

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 10/9/2025
SNOs_Map_LANDSAT-8_NPP_20251009.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 10/09/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP