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: 4/24/2023
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 -70.62, -77.10 122.55 04/25/2023 04:54:29 -70.58, -76.64 122.61 17.57 71
2 04/25/2023 05:43:59 70.35, 90.64 57.16 04/25/2023 05:43:58 70.37, 90.70 57.18 3.18 1
3 04/25/2023 06:34:41 -70.27,-101.91 122.95 04/25/2023 06:33:28 -70.26,-101.84 122.95 2.78 73
4 04/27/2023 21:10:06 -70.41, 39.01 123.63 04/27/2023 21:10:59 -70.42, 39.00 123.64 0.49 53
5 04/27/2023 22:00:49 70.30,-153.51 56.25 04/27/2023 22:00:25 70.31,-153.51 56.25 0.98 24
6 04/27/2023 22:51:16 -69.42, 15.12 124.67 04/27/2023 22:50:08 -69.48, 12.97 124.56 84.32 68
7 04/30/2023 13:26:56 -70.37, 154.85 124.51 04/30/2023 13:27:25 -70.38, 154.82 124.51 1.05 29
8 04/30/2023 14:17:40 70.27, -37.68 55.37 04/30/2023 14:16:52 70.27, -37.69 55.38 0.54 48
9 05/03/2023 04:53:08 70.60, 102.95 54.93 05/03/2023 04:54:20 70.51, 103.28 54.83 15.47 72
10 05/03/2023 05:43:47 -70.34, -89.33 125.35 05/03/2023 05:43:51 -70.35, -89.33 125.34 0.58 4
11 05/03/2023 06:34:31 70.24, 78.14 54.54 05/03/2023 06:33:18 70.24, 78.16 54.54 0.64 73
12 05/05/2023 21:09:56 70.43,-141.00 53.98 05/05/2023 21:10:46 70.45,-140.93 53.99 3.40 50
13 05/05/2023 22:00:38 -70.33, 26.48 126.14 05/05/2023 22:00:16 -70.34, 26.55 126.13 2.96 22

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/24/2023
SNOs_Map_NPP_LANDSAT-9_20230424.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/24/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9