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: 3/13/2023
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 03/14/2023 06:44:55 70.54, 74.34 73.18 03/14/2023 06:46:05 70.41, 75.33 73.01 39.33 70
2 03/14/2023 07:35:29 -70.03,-117.54 107.37 03/14/2023 07:35:40 -70.03,-117.59 107.38 1.74 11
3 03/14/2023 08:26:13 69.92, 49.94 72.50 03/14/2023 08:25:07 69.92, 49.91 72.51 1.43 66
4 03/16/2023 23:01:40 70.12,-169.22 71.67 03/16/2023 23:02:39 70.13,-169.21 71.67 1.21 59
5 03/16/2023 23:52:22 -70.02, -1.76 108.45 03/16/2023 23:52:09 -70.02, -1.73 108.45 1.23 13
6 03/17/2023 00:42:55 69.33, 166.57 70.82 03/17/2023 00:41:46 69.36, 165.01 70.91 61.15 69
7 03/19/2023 15:18:32 70.08, -53.38 70.56 03/19/2023 15:19:08 70.06, -53.42 70.54 2.30 36
8 03/19/2023 16:09:14 -69.98, 114.08 109.56 03/19/2023 16:08:38 -69.96, 114.06 109.57 2.70 36
9 03/22/2023 06:44:51 -70.73,-105.95 109.80 03/22/2023 06:46:00 -70.61,-104.39 109.99 59.14 69
10 03/22/2023 07:35:24 70.05, 62.43 69.47 03/22/2023 07:35:35 70.05, 62.45 69.47 0.69 11
11 03/22/2023 08:26:06 -69.95,-130.10 110.65 03/22/2023 08:25:05 -69.95,-130.06 110.65 1.71 61
12 03/24/2023 23:01:30 -70.10, 10.83 111.53 03/24/2023 23:02:34 -70.11, 10.77 111.53 2.88 64
13 03/24/2023 23:52:14 69.99, 178.30 68.35 03/24/2023 23:52:01 69.99, 178.25 68.35 1.79 13
14 03/25/2023 00:42:48 -69.47, -13.62 112.21 03/25/2023 00:41:37 -69.56, -14.71 112.08 43.73 71

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/13/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230313.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/13/2023 in txt file.

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