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: 3/8/2025
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 03/10/2025 14:16:06 -70.18, 142.24 105.96 03/10/2025 14:17:15 -70.19, 142.21 105.95 1.80 69
2 03/10/2025 15:06:51 70.10, -50.33 73.95 03/10/2025 15:06:42 70.09, -50.29 73.94 2.03 9
3 03/10/2025 15:57:28 -69.77, 117.49 106.42 03/10/2025 15:56:15 -69.81, 116.96 106.34 21.08 73
4 03/13/2025 06:32:57 -70.19,-101.99 107.00 03/13/2025 06:33:42 -70.18,-101.92 107.02 2.82 45
5 03/13/2025 07:23:41 70.06, 65.52 72.85 03/13/2025 07:23:09 70.07, 65.57 72.87 2.42 32
6 03/15/2025 21:59:21 71.02,-154.86 72.83 03/15/2025 22:00:28 70.90,-152.60 72.62 83.14 67
7 03/15/2025 22:49:47 -70.11, 13.93 108.15 03/15/2025 22:50:10 -70.14, 13.90 108.13 3.25 23
8 03/15/2025 23:40:32 70.03,-178.65 71.76 03/15/2025 23:39:37 70.02,-178.61 71.76 1.51 55
9 03/18/2025 14:15:57 70.21, -37.76 70.91 03/18/2025 14:17:07 70.22, -37.73 70.90 1.22 70
10 03/18/2025 15:06:38 -70.09, 129.75 109.24 03/18/2025 15:06:37 -70.11, 129.75 109.22 2.46 1
11 03/18/2025 15:57:19 69.80, -62.51 70.45 03/18/2025 15:56:06 69.89, -62.92 70.56 18.27 73
12 03/21/2025 06:32:47 70.16, 78.12 69.79 03/21/2025 06:33:34 70.16, 78.07 69.78 1.86 47
13 03/21/2025 07:23:29 -70.08,-114.44 110.31 03/21/2025 07:23:04 -70.05,-114.44 110.34 3.11 25

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/8/2025
SNOs_Map_NPP_LANDSAT-9_20250308.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/08/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9