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: 7/14/2025
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 07/14/2025 13:38:30 71.11, -29.86 49.58 07/14/2025 13:39:36 71.01, -27.17 49.38 98.00 66
2 07/14/2025 14:28:54 -70.08, 139.12 131.51 07/14/2025 14:29:21 -70.08, 139.08 131.51 1.68 27
3 07/14/2025 15:19:38 69.96, -53.39 48.37 07/14/2025 15:18:48 69.98, -53.42 48.40 2.95 50
4 07/17/2025 05:55:10 70.27, 87.27 49.13 07/17/2025 05:56:21 70.25, 87.55 49.08 11.01 71
5 07/17/2025 06:45:50 -70.07,-105.11 131.08 07/17/2025 06:45:52 -70.09,-105.04 131.07 2.91 2
6 07/17/2025 07:36:33 69.90, 62.46 48.76 07/17/2025 07:35:20 69.92, 62.37 48.79 3.81 73
7 07/19/2025 22:12:02 70.12,-156.72 49.45 07/19/2025 22:12:53 70.12,-156.75 49.44 1.01 51
8 07/19/2025 23:02:44 -70.02, 10.75 130.65 07/19/2025 23:02:23 -70.02, 10.74 130.65 0.44 21
9 07/19/2025 23:53:11 69.00, 179.52 48.30 07/19/2025 23:52:05 69.08, 177.11 48.48 95.95 66
10 07/22/2025 14:28:57 70.07, -40.89 49.93 07/22/2025 14:29:24 70.09, -40.91 49.94 2.26 27
11 07/22/2025 15:19:39 -69.96, 126.59 130.18 07/22/2025 15:18:54 -69.99, 126.58 130.15 3.16 45
12 07/25/2025 05:55:14 -70.44, -93.00 129.14 07/25/2025 05:56:25 -70.33, -92.34 129.29 27.72 71
13 07/25/2025 06:45:52 70.03, 74.94 50.44 07/25/2025 06:45:55 70.05, 74.90 50.46 2.12 3
14 07/25/2025 07:36:35 -69.97,-117.65 129.62 07/25/2025 07:35:25 -69.95,-117.60 129.63 2.91 70
15 07/27/2025 22:12:04 -70.13, 23.24 128.86 07/27/2025 22:12:59 -70.11, 23.23 128.90 2.87 55
16 07/27/2025 23:02:47 69.99,-169.23 51.01 07/27/2025 23:02:26 69.99,-169.30 51.00 2.59 21

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/14/2025
SNOs_Map_NOAA-21_LANDSAT-9_20250714.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/14/2025 in txt file.

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