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: 4/17/2023
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 04/19/2023 21:10:16 70.43,-141.03 59.04 04/19/2023 21:11:01 70.43,-140.98 59.03 1.73 45
2 04/19/2023 22:00:57 -70.29, 26.51 121.12 04/19/2023 22:00:31 -70.31, 26.49 121.09 2.63 26
3 04/22/2023 13:27:07 70.36, -25.14 58.06 04/22/2023 13:27:30 70.38, -25.17 58.08 2.87 23
4 04/22/2023 14:17:49 -70.27, 142.31 122.05 04/22/2023 14:17:00 -70.27, 142.31 122.05 0.32 49
5 04/25/2023 04:53:18 -70.62, -77.09 122.56 04/25/2023 04:54:29 -70.57, -76.66 122.63 16.95 71
6 04/25/2023 05:43:59 70.35, 90.64 57.16 04/25/2023 05:43:58 70.35, 90.66 57.15 1.09 1
7 04/25/2023 06:34:41 -70.26,-101.90 122.95 04/25/2023 06:33:28 -70.24,-101.86 122.97 2.76 73
8 04/27/2023 21:10:05 -70.41, 39.01 123.64 04/27/2023 21:10:57 -70.44, 39.03 123.62 2.86 52
9 04/27/2023 22:00:49 70.31,-153.51 56.25 04/27/2023 22:00:24 70.32,-153.49 56.27 2.14 25
10 04/27/2023 22:51:15 -69.37, 15.20 124.73 04/27/2023 22:50:08 -69.45, 12.93 124.60 89.53 67
11 04/30/2023 13:26:56 -70.37, 154.85 124.51 04/30/2023 13:27:24 -70.37, 154.82 124.52 1.22 28
12 04/30/2023 14:17:40 70.27, -37.68 55.38 04/30/2023 14:16:51 70.26, -37.70 55.36 2.09 49

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/17/2023
SNOs_Map_NPP_LANDSAT-9_20230418.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 04/17/2023 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9