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: 2/17/2025
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 02/17/2025 06:33:21 70.14, 77.95 82.06 02/17/2025 06:33:51 70.13, 78.02 82.05 2.82 30
2 02/17/2025 07:24:02 -69.99,-114.52 98.11 02/17/2025 07:23:21 -70.02,-114.51 98.08 3.19 41
3 02/19/2025 21:59:37 -70.58, 25.73 98.42 02/19/2025 22:00:48 -70.47, 26.75 98.58 39.57 71
4 02/19/2025 22:50:14 70.09,-166.21 81.06 02/19/2025 22:50:20 70.10,-166.15 81.06 2.07 6
5 02/19/2025 23:40:55 -69.95, 1.33 99.11 02/19/2025 23:39:50 -69.98, 1.32 99.07 3.51 65
6 02/22/2025 14:16:22 -70.18, 142.14 99.82 02/22/2025 14:17:20 -70.17, 142.20 99.84 2.41 58
7 02/22/2025 15:07:06 70.07, -50.38 80.06 02/22/2025 15:06:47 70.06, -50.31 80.05 2.55 19
8 02/22/2025 15:57:36 -69.34, 118.01 100.72 02/22/2025 15:56:27 -69.40, 116.41 100.58 62.70 69
9 02/25/2025 06:33:14 -70.11,-101.97 100.88 02/25/2025 06:33:48 -70.10,-102.03 100.90 2.58 34
10 02/25/2025 07:23:58 70.00, 65.51 78.99 02/25/2025 07:23:15 69.98, 65.46 78.98 2.40 43
11 02/27/2025 21:59:30 70.46,-154.05 78.50 02/27/2025 22:00:41 70.35,-153.40 78.35 27.10 71
12 02/27/2025 22:50:07 -70.11, 13.82 101.90 02/27/2025 22:50:14 -70.08, 13.85 101.92 2.95 7
13 02/27/2025 23:40:51 69.99,-178.70 77.98 02/27/2025 23:39:41 69.97,-178.67 77.96 3.16 70
14 03/02/2025 14:16:17 70.15, -37.78 77.15 03/02/2025 14:17:09 70.18, -37.75 77.16 3.33 52
15 03/02/2025 15:06:59 -70.06, 129.67 102.97 03/02/2025 15:06:39 -70.08, 129.73 102.95 2.62 20

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/17/2025
SNOs_Map_NPP_LANDSAT-9_20250217.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/17/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9