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: 8/25/2025
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 08/27/2025 14:53:13 -70.18, 132.67 119.69 08/27/2025 14:54:24 -70.15, 132.97 119.74 11.76 71
2 08/27/2025 15:43:55 69.96, -59.69 60.10 08/27/2025 15:43:53 69.94, -59.68 60.07 2.54 2
3 08/27/2025 16:34:36 -69.82, 107.85 120.05 08/27/2025 16:33:23 -69.82, 107.79 120.03 2.32 73
4 08/30/2025 07:10:03 -70.00,-111.28 118.93 08/30/2025 07:10:54 -70.02,-111.32 118.92 2.83 51
5 08/30/2025 08:00:47 69.90, 56.19 60.98 08/30/2025 08:00:21 69.92, 56.18 61.00 2.83 26
6 08/30/2025 08:51:13 -68.95,-135.14 119.99 08/30/2025 08:50:06 -68.98,-137.45 119.89 92.28 67
7 09/01/2025 23:26:57 -69.99, 4.52 117.98 09/01/2025 23:27:23 -69.99, 4.52 117.98 0.11 26
8 09/02/2025 00:17:41 69.89, 171.98 61.93 09/02/2025 00:16:50 69.89, 172.01 61.93 1.37 51
9 09/04/2025 14:53:10 70.14, -47.25 63.15 09/04/2025 14:54:21 70.10, -47.07 63.09 8.32 71
10 09/04/2025 15:43:50 -69.93, 120.39 117.07 09/04/2025 15:43:52 -69.94, 120.33 117.06 2.41 2
11 09/04/2025 16:34:33 69.78, -72.08 62.80 09/04/2025 16:33:19 69.83, -72.18 62.85 6.63 74
12 09/07/2025 07:10:02 70.04, 68.69 64.03 09/07/2025 07:10:50 70.03, 68.71 64.01 1.70 48
13 09/07/2025 08:00:44 -69.93,-123.83 116.08 09/07/2025 08:00:20 -69.92,-123.80 116.08 1.06 24

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/25/2025
SNOs_Map_NOAA-20_LANDSAT-9_20250826.jpg

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 08/25/2025 in txt file.

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