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: 4/26/2025
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 04/27/2025 13:26:09 70.76, -26.06 56.69 04/27/2025 13:27:19 70.66, -24.76 56.54 49.21 70
2 04/27/2025 14:16:42 -70.20, 142.16 123.91 04/27/2025 14:16:55 -70.22, 142.23 123.90 3.02 13
3 04/27/2025 15:07:25 70.08, -50.34 55.95 04/27/2025 15:06:22 70.06, -50.35 55.94 2.41 63
4 04/30/2025 05:42:57 70.24, 90.54 55.31 04/30/2025 05:43:54 70.27, 90.55 55.33 3.13 57
5 04/30/2025 06:33:39 -70.15,-102.00 124.80 04/30/2025 06:33:24 -70.16,-101.98 124.79 1.64 15
6 04/30/2025 07:24:11 69.40, 66.43 54.42 04/30/2025 07:23:02 69.45, 64.68 54.51 68.61 69
7 05/02/2025 21:59:55 70.21,-153.64 54.47 05/02/2025 22:00:23 70.23,-153.64 54.48 2.30 28
8 05/02/2025 22:50:37 -70.11, 13.83 125.65 05/02/2025 22:49:53 -70.12, 13.84 125.63 1.66 44
9 05/05/2025 13:26:11 -70.39, 154.53 126.11 05/05/2025 13:27:23 -70.37, 154.80 126.15 10.24 72
10 05/05/2025 14:16:53 70.18, -37.84 53.67 05/05/2025 14:16:51 70.20, -37.80 53.68 2.19 2
11 05/05/2025 15:07:35 -70.08, 129.65 126.46 05/05/2025 15:06:21 -70.09, 129.68 126.43 2.45 74
12 05/08/2025 05:43:07 -70.26, -89.51 126.98 05/08/2025 05:43:52 -70.24, -89.50 127.01 2.42 45
13 05/08/2025 06:33:50 70.12, 78.03 52.86 05/08/2025 06:33:19 70.13, 77.98 52.87 2.42 31

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/26/2025
SNOs_Map_NPP_LANDSAT-9_20250426.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/26/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9