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: 8/24/2025
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 08/25/2025 13:27:01 -70.29, 154.83 120.31 08/25/2025 13:27:50 -70.28, 154.79 120.33 2.26 49
2 08/25/2025 14:17:46 70.21, -37.73 59.62 08/25/2025 14:17:17 70.18, -37.71 59.59 3.02 29
3 08/28/2025 04:53:32 70.98, 102.15 61.33 08/28/2025 04:54:40 70.89, 103.95 61.19 66.09 68
4 08/28/2025 05:44:02 -70.26, -89.37 119.41 08/28/2025 05:44:19 -70.28, -89.32 119.40 2.81 17
5 08/28/2025 06:34:46 70.13, 78.14 60.47 08/28/2025 06:33:47 70.13, 78.10 60.47 1.76 59
6 08/30/2025 21:10:20 70.33,-141.04 61.60 08/30/2025 21:11:18 70.33,-141.01 61.59 1.17 58
7 08/30/2025 22:01:02 -70.24, 26.42 118.48 08/30/2025 22:00:48 -70.22, 26.46 118.51 3.06 14
8 08/30/2025 22:51:34 69.48,-165.13 60.75 08/30/2025 22:50:25 69.56,-166.81 60.87 65.88 69
9 09/02/2025 13:27:20 70.27, -25.18 62.50 09/02/2025 13:27:47 70.29, -25.17 62.53 3.21 27
10 09/02/2025 14:18:02 -70.17, 142.29 117.59 09/02/2025 14:17:17 -70.19, 142.31 117.57 2.01 45
11 09/05/2025 04:53:37 -70.37, -76.90 116.43 09/05/2025 04:54:49 -70.35, -76.84 116.45 2.75 72
12 09/05/2025 05:44:21 70.26, 90.58 63.48 09/05/2025 05:44:16 70.24, 90.65 63.46 2.98 5
13 09/05/2025 06:35:00 -70.00,-101.70 116.78 09/05/2025 06:33:48 -70.03,-102.03 116.74 13.05 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/24/2025
SNOs_Map_NPP_LANDSAT-9_20250825.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/24/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9