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: 2/25/2025
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 02/25/2025 06:33:14 -70.11,-101.97 100.89 02/25/2025 06:33:48 -70.09,-102.03 100.90 2.80 34
2 02/25/2025 07:23:58 69.98, 65.53 78.98 02/25/2025 07:23:15 69.99, 65.47 78.99 2.46 43
3 02/27/2025 21:59:29 70.46,-154.05 78.49 02/27/2025 22:00:40 70.35,-153.41 78.34 26.73 71
4 02/27/2025 22:50:05 -70.06, 13.89 101.95 02/27/2025 22:50:13 -70.07, 13.82 101.94 2.71 8
5 02/27/2025 23:40:50 69.99,-178.70 77.97 02/27/2025 23:39:40 69.96,-178.68 77.95 3.42 70
6 03/02/2025 14:16:16 70.16, -37.80 77.16 03/02/2025 14:17:08 70.16, -37.79 77.14 0.78 52
7 03/02/2025 15:06:57 -70.03, 129.72 103.00 03/02/2025 15:06:38 -70.04, 129.69 102.98 2.14 19
8 03/02/2025 15:57:26 69.11, -61.63 76.03 03/02/2025 15:56:19 69.16, -63.87 76.18 88.85 67
9 03/05/2025 06:33:08 70.15, 78.01 76.11 03/05/2025 06:33:32 70.14, 78.08 76.09 2.99 24
10 03/05/2025 07:23:49 -70.02,-114.46 104.05 03/05/2025 07:23:02 -70.03,-114.44 104.04 1.54 47
11 03/07/2025 21:59:16 -70.27, 26.31 104.80 03/07/2025 22:00:28 -70.24, 26.49 104.86 7.67 72
12 03/07/2025 22:49:59 70.10,-166.12 75.01 03/07/2025 22:49:56 70.07,-166.11 74.97 3.39 3
13 03/07/2025 23:40:39 -69.91, 1.48 105.21 03/07/2025 23:39:26 -69.96, 1.37 105.15 6.76 73
14 03/10/2025 14:16:05 -70.18, 142.24 105.95 03/10/2025 14:16:50 -70.18, 142.30 105.97 2.68 45
15 03/10/2025 15:06:49 70.06, -50.27 73.92 03/10/2025 15:06:17 70.06, -50.22 73.91 2.14 32

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 2/25/2025
SNOs_Map_NPP_LANDSAT-9_20250225.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 02/25/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9