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: 1/19/2025
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 -70.16, 142.10 90.07 01/21/2025 14:17:24 -70.14, 142.17 90.10 3.18 57
2 01/21/2025 15:07:10 70.01, -50.37 89.77 01/21/2025 15:06:51 70.04, -50.33 89.80 3.32 19
3 01/21/2025 15:57:41 -69.31, 117.97 90.97 01/21/2025 15:56:31 -69.38, 116.40 90.84 62.10 70
4 01/24/2025 06:33:22 -70.09,-102.03 90.76 01/24/2025 06:33:53 -70.10,-102.01 90.76 1.31 31
5 01/24/2025 07:24:06 70.00, 65.42 89.14 01/24/2025 07:23:20 69.99, 65.48 89.13 2.67 46
6 01/26/2025 21:59:38 70.31,-153.92 88.82 01/26/2025 22:00:50 70.22,-153.57 88.71 16.40 72
7 01/26/2025 22:50:17 -70.04, 13.82 91.48 01/26/2025 22:50:21 -70.06, 13.83 91.46 2.99 4
8 01/26/2025 23:41:01 69.95,-178.73 88.42 01/26/2025 23:39:48 69.95,-178.68 88.43 1.92 73
9 01/29/2025 14:16:30 70.12, -37.84 87.91 01/29/2025 14:17:18 70.14, -37.80 87.92 3.16 48
10 01/29/2025 15:07:12 -70.00, 129.66 92.23 01/29/2025 15:06:49 -69.98, 129.61 92.24 2.41 23
11 02/01/2025 05:42:57 -71.07, -90.92 91.82 02/01/2025 05:44:03 -70.95, -88.35 92.05 93.90 66
12 02/01/2025 06:33:24 70.09, 77.97 87.14 02/01/2025 06:33:44 70.07, 77.99 87.11 2.84 20
13 02/01/2025 07:24:06 -69.97,-114.53 93.00 02/01/2025 07:23:14 -69.97,-114.52 93.00 0.78 52

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 1/19/2025
SNOs_Map_NPP_LANDSAT-9_20250119.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 01/19/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9