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: 12/9/2023
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 12/11/2023 07:34:45 -69.99,-117.66 87.13 12/11/2023 07:35:48 -69.96,-117.63 87.16 3.16 63
2 12/11/2023 08:25:29 69.87, 49.82 92.76 12/11/2023 08:25:15 69.85, 49.87 92.74 2.96 14
3 12/11/2023 09:16:03 -69.36,-142.11 87.77 12/11/2023 09:14:52 -69.36,-143.16 87.75 41.53 71
4 12/13/2023 23:51:40 -69.94, -1.81 86.98 12/13/2023 23:52:20 -69.91, -1.83 87.01 3.42 40
5 12/14/2023 00:42:24 69.83, 165.66 92.92 12/14/2023 00:41:47 69.80, 165.66 92.89 3.25 37
6 12/16/2023 15:18:04 70.57, -54.35 93.83 12/16/2023 15:19:13 70.43, -52.84 93.65 58.54 69
7 12/16/2023 16:08:35 -69.89, 114.02 86.88 12/16/2023 16:08:51 -69.89, 114.02 86.89 0.76 16
8 12/16/2023 16:59:19 69.79, -78.51 93.02 12/16/2023 16:58:18 69.78, -78.49 93.01 1.42 61
9 12/19/2023 07:34:48 69.96, 62.37 93.29 12/19/2023 07:35:52 69.95, 62.35 93.27 1.68 64
10 12/19/2023 08:25:30 -69.86,-130.16 86.82 12/19/2023 08:25:22 -69.85,-130.16 86.83 1.26 8
11 12/19/2023 09:16:06 69.33, 37.92 92.64 12/19/2023 09:14:55 69.40, 36.88 92.74 41.79 71
12 12/21/2023 23:51:42 69.94, 178.18 93.30 12/21/2023 23:52:21 69.94, 178.22 93.30 1.51 39
13 12/22/2023 00:42:24 -69.83, -14.35 86.81 12/22/2023 00:41:51 -69.84, -14.29 86.80 2.57 33

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 12/9/2023
SNOs_Map_NOAA-21_LANDSAT-9_20231209.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 12/09/2023 in txt file.

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