Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/19/2023
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 11/19/2023 23:51:28 69.92, 178.26 89.39 11/19/2023 23:52:15 69.93, 178.23 89.40 1.94 47
2 11/20/2023 00:42:10 -69.82, -14.28 90.71 11/20/2023 00:41:45 -69.82, -14.29 90.71 0.70 25
3 11/22/2023 15:17:58 -70.93, 125.11 89.01 11/22/2023 15:19:04 -70.83, 127.77 89.12 97.56 66
4 11/22/2023 16:08:24 69.88, -65.92 89.94 11/22/2023 16:08:46 69.91, -65.94 89.97 3.32 22
5 11/22/2023 16:59:06 -69.78, 101.55 90.16 11/22/2023 16:58:16 -69.80, 101.55 90.14 2.39 50
6 11/25/2023 07:34:39 -70.06,-117.73 89.34 11/25/2023 07:35:50 -70.03,-117.55 89.38 7.81 71
7 11/25/2023 08:25:21 69.84, 49.90 90.46 11/25/2023 08:25:18 69.86, 49.87 90.47 2.24 3
8 11/25/2023 09:16:02 -69.69,-142.56 89.70 11/25/2023 09:14:49 -69.70,-142.72 89.69 6.40 73
9 11/27/2023 23:51:34 -69.92, -1.77 88.97 11/27/2023 23:52:23 -69.91, -1.84 88.99 3.05 49
10 11/28/2023 00:42:18 69.82, 165.70 90.93 11/28/2023 00:41:50 69.80, 165.65 90.91 2.81 28
11 11/30/2023 15:18:04 70.80, -54.70 92.37 11/30/2023 15:19:11 70.70, -52.45 92.26 83.27 67
12 11/30/2023 16:08:31 -69.90, 114.03 88.54 11/30/2023 16:08:54 -69.88, 114.00 88.56 2.13 23
13 11/30/2023 16:59:15 69.80, -78.51 91.37 11/30/2023 16:58:21 69.77, -78.51 91.34 3.28 54

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/19/2023
SNOs_Map_NOAA-21_LANDSAT-9_20231119.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 11/19/2023 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-9