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: 6/22/2025
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 06/25/2025 04:53:08 70.77, 102.36 47.38 06/25/2025 04:54:18 70.64, 103.58 47.20 46.96 70
2 06/25/2025 05:43:41 -70.20, -89.41 133.22 06/25/2025 05:43:54 -70.20, -89.43 133.22 1.11 13
3 06/25/2025 06:34:25 70.09, 78.07 46.67 06/25/2025 06:33:21 70.10, 78.06 46.68 1.19 64
4 06/27/2025 21:09:55 70.29,-141.08 46.97 06/27/2025 21:10:55 70.27,-141.09 46.94 1.95 60
5 06/27/2025 22:00:37 -70.19, 26.39 133.13 06/27/2025 22:00:25 -70.16, 26.38 133.16 3.03 12
6 06/27/2025 22:51:10 69.50,-165.26 46.15 06/27/2025 22:50:01 69.56,-166.81 46.27 60.59 69
7 06/30/2025 13:26:50 70.28, -25.29 47.11 06/30/2025 13:27:24 70.26, -25.22 47.09 3.00 34
8 06/30/2025 14:17:31 -70.13, 142.26 133.04 06/30/2025 14:16:54 -70.16, 142.26 133.01 3.50 37
9 07/03/2025 04:53:11 -70.85, -77.75 132.08 07/03/2025 04:54:20 -70.74, -76.28 132.26 55.48 69
10 07/03/2025 05:43:45 70.22, 90.58 47.25 07/03/2025 05:43:54 70.24, 90.63 47.27 3.44 9
11 07/03/2025 06:34:26 -70.07,-101.88 132.90 07/03/2025 06:33:25 -70.09,-101.96 132.87 3.53 61
12 07/05/2025 21:09:56 -70.28, 38.95 132.44 07/05/2025 21:10:58 -70.27, 38.91 132.46 1.65 62
13 07/05/2025 22:00:40 70.17,-153.57 47.45 07/05/2025 22:00:25 70.15,-153.61 47.44 2.11 15
14 07/05/2025 22:51:13 -69.60, 14.61 133.15 07/05/2025 22:50:03 -69.62, 13.27 133.07 51.86 70

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/22/2025
SNOs_Map_NPP_LANDSAT-9_20250623.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 06/22/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9