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: 8/25/2025
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 08/28/2025 04:53:32 70.98, 102.15 61.33 08/28/2025 04:54:40 70.89, 103.95 61.18 65.97 68
2 08/28/2025 05:44:02 -70.26, -89.37 119.41 08/28/2025 05:44:19 -70.28, -89.33 119.40 2.14 17
3 08/28/2025 06:34:46 70.13, 78.14 60.47 08/28/2025 06:33:47 70.12, 78.09 60.47 2.10 59
4 08/30/2025 21:10:20 70.33,-141.04 61.60 08/30/2025 21:11:18 70.32,-141.02 61.58 1.58 58
5 08/30/2025 22:01:01 -70.19, 26.50 118.54 08/30/2025 22:00:48 -70.20, 26.45 118.52 2.69 13
6 08/30/2025 22:51:34 69.48,-165.13 60.75 08/30/2025 22:50:25 69.55,-166.82 60.86 66.16 69
7 09/02/2025 13:27:20 70.27, -25.19 62.51 09/02/2025 13:27:47 70.28, -25.19 62.51 1.05 27
8 09/02/2025 14:18:02 -70.17, 142.28 117.59 09/02/2025 14:17:17 -70.17, 142.28 117.59 0.56 45
9 09/05/2025 04:53:37 -70.37, -76.91 116.42 09/05/2025 04:54:48 -70.38, -76.80 116.42 4.07 71
10 09/05/2025 05:44:20 70.21, 90.66 63.43 09/05/2025 05:44:16 70.22, 90.61 63.43 1.91 4
11 09/05/2025 06:35:00 -70.00,-101.71 116.78 09/05/2025 06:33:47 -70.06,-101.99 116.72 12.21 73
12 09/07/2025 21:10:37 -70.32, 38.94 115.48 09/07/2025 21:11:17 -70.30, 38.98 115.50 2.12 40
13 09/07/2025 22:01:21 70.21,-153.59 64.43 09/07/2025 22:00:44 70.19,-153.54 64.41 3.09 37

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/25/2025
SNOs_Map_NPP_LANDSAT-9_20250826.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/25/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9