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: 4/6/2023
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 04/06/2023 13:27:11 70.31, -25.28 63.77 04/06/2023 13:27:38 70.32, -25.24 63.78 1.53 27
2 04/06/2023 14:17:52 -70.18, 142.25 116.38 04/06/2023 14:17:08 -70.20, 142.22 116.35 3.11 44
3 04/09/2023 04:53:25 -70.53, -77.16 117.00 04/09/2023 04:54:37 -70.46, -76.80 117.09 15.13 72
4 04/09/2023 05:44:06 70.25, 90.60 62.70 04/09/2023 05:44:06 70.25, 90.53 62.70 2.42 0
5 04/09/2023 06:34:48 -70.16,-101.96 117.41 04/09/2023 06:33:35 -70.19,-101.92 117.38 3.27 73
6 04/11/2023 21:10:19 -70.36, 38.87 118.16 04/11/2023 21:11:06 -70.36, 38.93 118.18 2.20 47
7 04/11/2023 22:01:03 70.24,-153.63 61.70 04/11/2023 22:00:33 70.25,-153.58 61.71 1.82 30
8 04/14/2023 12:36:46 71.09, -13.86 61.63 04/14/2023 12:37:53 70.98, -11.88 61.47 72.63 67
9 04/14/2023 13:27:15 -70.32, 154.72 119.19 04/14/2023 13:27:33 -70.33, 154.77 119.18 2.16 18
10 04/14/2023 14:17:59 70.20, -37.78 60.68 04/14/2023 14:17:00 70.22, -37.74 60.70 2.43 59
11 04/17/2023 04:53:29 70.37, 103.09 59.92 04/17/2023 04:54:30 70.37, 103.09 59.91 0.43 61
12 04/17/2023 05:44:11 -70.28, -89.44 120.19 04/17/2023 05:44:00 -70.26, -89.44 120.20 1.51 11
13 04/17/2023 06:34:45 69.64, 78.84 59.14 04/17/2023 06:33:35 69.71, 77.43 59.25 55.24 70
14 04/19/2023 21:10:24 70.34,-141.09 58.96 04/19/2023 21:10:55 70.32,-141.09 58.93 2.50 31
15 04/19/2023 22:01:06 -70.25, 26.38 121.16 04/19/2023 22:00:25 -70.22, 26.39 121.19 3.21 41

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/6/2023
SNOs_Map_NPP_LANDSAT-9_20230406.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/06/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9