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: 1/20/2025
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 01/21/2025 14:16:27 -70.11, 142.17 90.12 01/21/2025 14:17:25 -70.13, 142.16 90.11 2.06 58
2 01/21/2025 15:07:11 70.02, -50.38 89.78 01/21/2025 15:06:52 70.02, -50.35 89.79 1.43 19
3 01/21/2025 15:57:40 -69.27, 118.03 91.02 01/21/2025 15:56:31 -69.36, 116.38 90.85 65.79 69
4 01/24/2025 06:33:22 -70.10,-102.05 90.75 01/24/2025 06:33:53 -70.07,-102.04 90.79 3.21 31
5 01/24/2025 07:24:05 69.96, 65.48 89.09 01/24/2025 07:23:20 69.96, 65.45 89.11 1.53 45
6 01/26/2025 21:59:38 70.33,-153.94 88.84 01/26/2025 22:00:49 70.24,-153.55 88.72 18.04 71
7 01/26/2025 22:50:17 -70.06, 13.80 91.47 01/26/2025 22:50:20 -70.07, 13.85 91.45 2.94 3
8 01/26/2025 23:41:00 69.91,-178.68 88.38 01/26/2025 23:39:48 69.91,-178.74 88.39 2.54 72
9 01/29/2025 14:16:30 70.14, -37.88 87.94 01/29/2025 14:17:17 70.13, -37.81 87.91 2.81 47
10 01/29/2025 15:07:12 -70.02, 129.62 92.20 01/29/2025 15:06:47 -70.02, 129.67 92.20 1.97 25
11 02/01/2025 05:42:56 -71.00, -90.79 91.89 02/01/2025 05:44:03 -70.91, -88.41 92.09 87.22 67
12 02/01/2025 06:33:24 70.07, 78.00 87.12 02/01/2025 06:33:43 70.08, 78.01 87.12 0.88 19
13 02/01/2025 07:24:05 -69.96,-114.50 93.02 02/01/2025 07:23:12 -69.98,-114.50 92.99 2.53 53

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/20/2025
SNOs_Map_NPP_LANDSAT-9_20250120.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/20/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9