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: 4/20/2023
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 04/22/2023 13:27:07 70.37, -25.16 58.06 04/22/2023 13:27:30 70.37, -25.18 58.07 1.19 23
2 04/22/2023 14:17:49 -70.28, 142.29 122.04 04/22/2023 14:17:00 -70.26, 142.29 122.06 2.22 49
3 04/25/2023 04:53:18 -70.63, -77.11 122.55 04/25/2023 04:54:29 -70.56, -76.68 122.64 18.06 71
4 04/25/2023 05:43:59 70.36, 90.62 57.17 04/25/2023 05:43:58 70.34, 90.65 57.15 2.69 1
5 04/25/2023 06:34:40 -70.22,-101.84 122.99 04/25/2023 06:33:28 -70.23,-101.88 122.98 1.75 72
6 04/27/2023 21:10:06 -70.42, 38.99 123.62 04/27/2023 21:10:58 -70.42, 39.01 123.63 0.68 52
7 04/27/2023 22:00:50 70.32,-153.53 56.26 04/27/2023 22:00:25 70.31,-153.50 56.26 1.08 25
8 04/27/2023 22:51:16 -69.38, 15.19 124.72 04/27/2023 22:50:09 -69.44, 12.91 124.61 89.20 67
9 04/30/2023 13:26:56 -70.39, 154.83 124.50 04/30/2023 13:27:23 -70.41, 154.88 124.48 3.29 27
10 04/30/2023 14:17:40 70.28, -37.70 55.39 04/30/2023 14:16:50 70.30, -37.64 55.41 2.80 50
11 05/03/2023 04:53:07 70.57, 103.00 54.90 05/03/2023 04:54:18 70.51, 103.29 54.83 12.22 71
12 05/03/2023 05:43:47 -70.36, -89.35 125.33 05/03/2023 05:43:49 -70.35, -89.32 125.34 1.73 2
13 05/03/2023 06:34:29 70.16, 78.27 54.45 05/03/2023 06:33:17 70.18, 78.08 54.48 7.66 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/20/2023
SNOs_Map_NPP_LANDSAT-9_20230420.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/20/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9