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: 4/18/2025
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 04/18/2025 23:25:46 70.75,-176.51 59.54 04/18/2025 23:26:54 70.63,-174.68 59.37 68.67 68
2 04/19/2025 00:16:15 -69.98, -7.97 121.28 04/19/2025 00:16:34 -69.97, -8.00 121.29 1.89 19
3 04/19/2025 01:06:59 69.85, 159.52 58.58 04/19/2025 01:06:01 69.86, 159.50 58.60 1.35 58
4 04/21/2025 15:42:31 70.03, -59.61 57.87 04/21/2025 15:43:31 70.06, -59.62 57.89 3.21 60
5 04/21/2025 16:33:13 -69.94, 107.85 122.24 04/21/2025 16:33:01 -69.95, 107.85 122.23 0.96 12
6 04/21/2025 17:23:47 69.29, -83.89 57.08 04/21/2025 17:22:37 69.34, -85.32 57.18 56.48 70
7 04/24/2025 07:59:28 70.01, 56.19 56.95 04/24/2025 07:59:57 70.00, 56.18 56.94 0.84 29
8 04/24/2025 08:50:10 -69.91,-136.35 123.16 04/24/2025 08:49:27 -69.89,-136.34 123.18 2.11 43
9 04/26/2025 23:25:43 -70.15, 4.42 123.76 04/26/2025 23:26:55 -70.12, 4.60 123.80 7.45 72
10 04/27/2025 00:16:25 69.94, 172.05 56.01 04/27/2025 00:16:23 69.95, 172.01 56.03 2.46 2
11 04/27/2025 01:07:06 -69.78, -20.40 124.16 04/27/2025 01:05:54 -69.79, -20.58 124.14 7.22 72
12 04/29/2025 15:42:39 -70.03, 120.36 124.72 04/29/2025 15:43:21 -70.04, 120.38 124.72 1.38 42
13 04/29/2025 16:33:23 69.93, -72.18 55.17 04/29/2025 16:32:48 69.93, -72.14 55.16 1.79 35

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/18/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250418.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 04/18/2025 in txt file.

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