Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/19/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 04/21/2025 15:42:31 70.06, -59.66 57.91 04/21/2025 15:43:30 70.08, -59.60 57.91 2.92 59
2 04/21/2025 16:33:12 -69.92, 107.88 122.26 04/21/2025 16:33:01 -69.91, 107.80 122.27 3.10 11
3 04/21/2025 17:23:46 69.27, -83.86 57.06 04/21/2025 17:22:37 69.30, -85.37 57.14 59.46 69
4 04/24/2025 07:59:28 69.99, 56.22 56.93 04/24/2025 07:59:57 70.01, 56.20 56.96 3.21 29
5 04/24/2025 08:50:10 -69.89,-136.32 123.18 04/24/2025 08:49:27 -69.90,-136.32 123.17 1.52 43
6 04/26/2025 23:25:44 -70.18, 4.36 123.72 04/26/2025 23:26:55 -70.13, 4.62 123.79 11.05 71
7 04/27/2025 00:16:26 69.97, 172.00 56.05 04/27/2025 00:16:23 69.97, 172.02 56.04 1.20 3
8 04/27/2025 01:07:07 -69.82, -20.45 124.13 04/27/2025 01:05:53 -69.86, -20.49 124.08 4.76 74
9 04/29/2025 15:42:39 -70.02, 120.38 124.74 04/29/2025 15:43:21 -70.05, 120.39 124.71 3.57 42
10 04/29/2025 16:33:23 69.92, -72.15 55.15 04/29/2025 16:32:48 69.93, -72.13 55.17 2.33 35
11 05/02/2025 07:09:00 70.45, 68.16 54.91 05/02/2025 07:10:11 70.31, 69.02 54.74 35.93 71
12 05/02/2025 07:59:35 -69.97,-123.78 125.60 05/02/2025 07:59:45 -69.98,-123.81 125.59 2.11 10
13 05/02/2025 08:50:19 69.87, 43.68 54.29 05/02/2025 08:49:12 69.86, 43.67 54.29 0.74 67

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/19/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250419.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/19/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-9