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: 3/11/2023
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 70.53, 74.37 73.17 03/14/2023 06:46:05 70.43, 75.35 73.02 38.10 70
2 03/14/2023 07:35:30 -70.07,-117.60 107.34 03/14/2023 07:35:40 -70.05,-117.56 107.36 2.11 10
3 03/14/2023 08:26:14 69.95, 49.88 72.54 03/14/2023 08:25:07 69.94, 49.93 72.53 2.24 67
4 03/16/2023 23:01:41 70.15,-169.27 71.71 03/16/2023 23:02:39 70.14,-169.19 71.68 3.33 58
5 03/16/2023 23:52:22 -70.01, -1.73 108.46 03/16/2023 23:52:10 -69.98, -1.78 108.49 3.35 12
6 03/17/2023 00:42:55 69.31, 166.59 70.80 03/17/2023 00:41:46 69.37, 165.03 70.93 61.68 69
7 03/19/2023 15:18:32 70.06, -53.35 70.55 03/19/2023 15:19:08 70.06, -53.42 70.55 2.45 36
8 03/19/2023 16:09:13 -69.96, 114.11 109.57 03/19/2023 16:08:37 -69.96, 114.07 109.57 1.33 36
9 03/22/2023 06:44:50 -70.72,-105.92 109.82 03/22/2023 06:45:59 -70.60,-104.40 110.00 57.57 69
10 03/22/2023 07:35:23 70.04, 62.46 69.46 03/22/2023 07:35:34 70.04, 62.44 69.46 1.04 11
11 03/22/2023 08:26:05 -69.94,-130.08 110.67 03/22/2023 08:25:04 -69.94,-130.07 110.65 0.63 61
12 03/24/2023 23:01:31 -70.13, 10.78 111.50 03/24/2023 23:02:33 -70.14, 10.82 111.50 1.78 62
13 03/24/2023 23:52:15 70.03, 178.24 68.39 03/24/2023 23:52:00 70.02, 178.29 68.38 2.35 15
14 03/25/2023 00:42:48 -69.45, -13.59 112.23 03/25/2023 00:41:37 -69.53, -14.74 112.10 45.72 71

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/11/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230312.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/11/2023 in txt file.

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