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: 4/30/2023
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 04/30/2023 13:26:57 -70.41, 154.79 124.47 04/30/2023 13:27:25 -70.39, 154.84 124.50 3.21 28
2 04/30/2023 14:17:41 70.30, -37.72 55.40 04/30/2023 14:16:52 70.29, -37.66 55.39 2.39 49
3 05/03/2023 04:53:09 70.62, 102.91 54.96 05/03/2023 04:54:20 70.55, 103.33 54.87 17.55 71
4 05/03/2023 05:43:47 -70.32, -89.29 125.37 05/03/2023 05:43:52 -70.32, -89.37 125.37 2.76 5
5 05/03/2023 06:34:31 70.21, 78.19 54.51 05/03/2023 06:33:19 70.22, 78.13 54.52 2.35 72
6 05/05/2023 21:09:55 70.39,-140.94 53.94 05/05/2023 21:10:47 70.40,-141.00 53.95 2.58 52
7 05/05/2023 22:00:37 -70.30, 26.52 126.17 05/05/2023 22:00:17 -70.29, 26.47 126.18 2.21 20
8 05/05/2023 22:51:05 69.34,-164.75 52.84 05/05/2023 22:49:59 69.35,-167.18 52.91 95.31 66
9 05/08/2023 13:26:46 70.38, -25.14 53.18 05/08/2023 13:27:12 70.39, -25.12 53.19 2.13 26
10 05/08/2023 14:17:28 -70.28, 142.33 126.93 05/08/2023 14:16:42 -70.28, 142.35 126.93 0.90 46
11 05/11/2023 04:52:57 -70.68, -77.15 127.21 05/11/2023 04:54:08 -70.58, -76.60 127.33 22.88 71
12 05/11/2023 05:43:37 70.37, 90.65 52.47 05/11/2023 05:43:37 70.36, 90.72 52.45 2.81 0
13 05/11/2023 06:34:19 -70.27,-101.87 127.65 05/11/2023 06:33:07 -70.25,-101.80 127.67 3.25 72
14 05/13/2023 21:09:43 -70.41, 39.06 128.16 05/13/2023 21:10:35 -70.41, 39.05 128.16 0.34 52
15 05/13/2023 22:00:27 70.32,-153.49 51.74 05/13/2023 22:00:02 70.30,-153.48 51.72 2.39 25

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/30/2023
SNOs_Map_NPP_LANDSAT-9_20230430.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/30/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9