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: 12/5/2025
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 12/07/2025 11:48:12 70.47, -0.32 93.03 12/07/2025 11:49:06 70.45, -0.26 93.01 2.93 54
2 12/07/2025 12:38:53 -70.35, 167.18 87.09 12/07/2025 12:38:36 -70.34, 167.20 87.11 2.14 17
3 12/07/2025 13:29:23 69.46, -24.17 92.02 12/07/2025 13:28:16 69.52, -26.30 92.09 83.32 67
4 12/10/2025 04:05:11 70.42, 115.52 93.24 12/10/2025 04:05:33 70.40, 115.55 93.22 2.41 22
5 12/10/2025 04:55:52 -70.30, -76.98 86.88 12/10/2025 04:55:03 -70.28, -76.99 86.89 1.78 49
6 12/12/2025 19:31:26 -70.47, 63.89 86.50 12/12/2025 19:32:33 -70.46, 63.89 86.51 0.79 67
7 12/12/2025 20:22:11 70.38,-128.66 93.42 12/12/2025 20:22:00 70.35,-128.63 93.39 2.86 11
8 12/12/2025 21:12:46 -69.94, 39.34 87.03 12/12/2025 21:11:34 -70.02, 38.53 86.94 32.06 72
9 12/15/2025 11:48:26 -70.44, 179.71 86.37 12/15/2025 11:48:59 -70.43, 179.74 86.38 1.28 33
10 12/15/2025 12:39:10 70.30, -12.77 93.49 12/15/2025 12:38:26 70.32, -12.78 93.52 2.82 44
11 12/18/2025 03:14:44 70.49, 128.06 93.79 12/18/2025 03:15:55 70.47, 128.06 93.76 2.68 71
12 12/18/2025 04:05:25 -70.36, -64.41 86.34 12/18/2025 04:05:25 -70.36, -64.47 86.35 2.09 0
13 12/18/2025 04:56:06 70.07, 103.35 93.36 12/18/2025 04:54:54 70.14, 102.85 93.44 20.20 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 12/5/2025
SNOs_Map_NPP_LANDSAT-9_20251206.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 12/05/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9