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: 4/22/2023
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 04/25/2023 04:53:18 -70.63, -77.12 122.54 04/25/2023 04:54:29 -70.58, -76.65 122.62 18.52 71
2 04/25/2023 05:43:59 70.36, 90.62 57.17 04/25/2023 05:43:58 70.37, 90.69 57.17 2.52 1
3 04/25/2023 06:34:40 -70.22,-101.84 122.99 04/25/2023 06:33:28 -70.25,-101.85 122.96 3.08 72
4 04/27/2023 21:10:06 -70.42, 39.00 123.62 04/27/2023 21:10:59 -70.43, 39.01 123.63 0.82 53
5 04/27/2023 22:00:50 70.31,-153.52 56.26 04/27/2023 22:00:26 70.32,-153.50 56.26 1.51 24
6 04/27/2023 22:51:17 -69.43, 15.11 124.66 04/27/2023 22:50:09 -69.50, 12.99 124.55 83.28 68
7 04/30/2023 13:26:57 -70.38, 154.84 124.51 04/30/2023 13:27:27 -70.35, 154.79 124.53 3.36 30
8 04/30/2023 14:17:40 70.27, -37.68 55.38 04/30/2023 14:16:53 70.25, -37.72 55.35 3.34 47
9 05/03/2023 04:53:09 70.65, 102.87 54.98 05/03/2023 04:54:20 70.57, 103.36 54.89 20.28 71
10 05/03/2023 05:43:47 -70.34, -89.32 125.35 05/03/2023 05:43:52 -70.36, -89.32 125.34 1.58 5
11 05/03/2023 06:34:31 70.24, 78.14 54.54 05/03/2023 06:33:19 70.25, 78.16 54.55 0.82 72
12 05/05/2023 21:09:56 70.42,-140.98 53.97 05/05/2023 21:10:48 70.43,-140.96 53.97 1.80 52
13 05/05/2023 22:00:38 -70.32, 26.49 126.15 05/05/2023 22:00:18 -70.33, 26.52 126.14 1.44 20

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/22/2023
SNOs_Map_NPP_LANDSAT-9_20230423.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/22/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9