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: 8/10/2025
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 08/12/2025 05:43:47 -70.29, -89.40 124.62 08/12/2025 05:44:15 -70.27, -89.34 124.65 2.87 28
2 08/12/2025 06:34:31 70.15, 78.13 55.24 08/12/2025 06:33:42 70.17, 78.16 55.27 2.84 49
3 08/14/2025 21:10:02 70.54,-141.33 56.44 08/14/2025 21:11:13 70.47,-140.81 56.35 20.60 71
4 08/14/2025 22:00:40 -70.26, 26.43 123.84 08/14/2025 22:00:45 -70.25, 26.50 123.86 2.71 5
5 08/14/2025 22:51:24 70.12,-166.05 56.03 08/14/2025 22:50:12 70.14,-166.00 56.06 3.06 72
6 08/17/2025 13:26:52 70.30, -25.18 57.04 08/17/2025 13:27:46 70.31, -25.16 57.04 0.78 54
7 08/17/2025 14:17:33 -70.18, 142.34 123.08 08/17/2025 14:17:16 -70.20, 142.31 123.05 2.87 17
8 08/17/2025 15:08:03 69.30, -49.06 56.03 08/17/2025 15:06:56 69.38, -51.18 56.17 83.79 67
9 08/20/2025 05:43:46 70.29, 90.63 57.90 08/20/2025 05:44:16 70.30, 90.70 57.90 2.65 30
10 08/20/2025 06:34:27 -70.16,-101.84 122.23 08/20/2025 06:33:47 -70.14,-101.90 122.25 3.07 40
11 08/22/2025 21:10:03 -70.76, 38.34 120.73 08/22/2025 21:11:14 -70.65, 39.45 120.89 42.84 71
12 08/22/2025 22:00:39 70.23,-153.49 58.72 08/22/2025 22:00:47 70.21,-153.55 58.70 3.21 8
13 08/22/2025 22:51:21 -70.14, 13.96 121.36 08/22/2025 22:50:16 -70.16, 14.02 121.34 2.77 65

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/10/2025
SNOs_Map_NPP_LANDSAT-9_20250810.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 08/10/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9