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: 3/31/2023
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 04/01/2023 04:53:20 70.53, 102.83 66.06 04/01/2023 04:54:32 70.46, 103.24 65.97 16.86 72
2 04/01/2023 05:43:58 -70.24, -89.38 114.26 04/01/2023 05:44:04 -70.23, -89.46 114.27 2.77 6
3 04/01/2023 06:34:43 70.16, 78.04 65.65 04/01/2023 06:33:30 70.18, 78.11 65.67 3.51 73
4 04/03/2023 21:10:13 70.29,-141.02 64.78 04/03/2023 21:10:58 70.30,-141.10 64.78 3.08 45
5 04/03/2023 22:00:55 -70.21, 26.43 115.33 04/03/2023 22:00:27 -70.24, 26.45 115.30 3.19 28
6 04/06/2023 12:36:36 -70.92, 166.42 115.58 04/06/2023 12:37:45 -70.85, 167.98 115.70 57.52 69
7 04/06/2023 13:27:10 70.28, -25.23 63.74 04/06/2023 13:27:20 70.30, -25.19 63.76 2.85 10
8 04/06/2023 14:17:52 -70.19, 142.23 116.36 04/06/2023 14:16:50 -70.19, 142.28 116.36 2.24 62
9 04/09/2023 04:53:21 -70.35, -76.87 117.19 04/09/2023 04:54:14 -70.37, -76.82 117.17 3.39 53
10 04/09/2023 05:44:05 70.23, 90.62 62.68 04/09/2023 05:43:41 70.26, 90.66 62.71 3.35 24
11 04/09/2023 06:34:32 -69.35,-100.74 118.25 04/09/2023 06:33:25 -69.38,-102.93 118.15 85.71 67
12 04/11/2023 20:19:48 71.08,-129.62 62.60 04/11/2023 20:20:55 70.99,-127.61 62.46 73.36 67
13 04/11/2023 21:10:17 -70.31, 38.97 118.22 04/11/2023 21:10:36 -70.28, 38.96 118.25 2.85 19
14 04/11/2023 22:01:01 70.20,-153.55 61.65 04/11/2023 22:00:03 70.17,-153.57 61.63 3.43 58

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/31/2023
SNOs_Map_NPP_LANDSAT-9_20230331.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 03/31/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9