Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/30/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 09/01/2025 22:37:21 -70.06, 17.03 117.93 09/01/2025 22:37:55 -70.07, 16.96 117.92 2.64 34
2 09/01/2025 23:28:05 69.96,-175.52 61.99 09/01/2025 23:27:22 69.96,-175.54 61.99 0.83 43
3 09/04/2025 14:03:40 70.52, -35.24 63.53 09/04/2025 14:04:51 70.41, -34.30 63.38 37.49 71
4 09/04/2025 14:54:15 -70.05, 132.82 116.96 09/04/2025 14:54:26 -70.02, 132.78 116.99 3.04 11
5 09/04/2025 15:44:58 69.90, -59.65 62.90 09/04/2025 15:43:53 69.92, -59.72 62.93 3.61 65
6 09/07/2025 06:20:26 70.10, 81.19 64.08 09/07/2025 06:21:26 70.11, 81.16 64.08 1.89 60
7 09/07/2025 07:11:08 -70.00,-111.33 116.02 09/07/2025 07:10:56 -70.01,-111.36 116.01 1.87 12
8 09/07/2025 08:01:41 69.31, 56.98 63.29 09/07/2025 08:00:32 69.40, 55.45 63.42 60.78 69
9 09/09/2025 22:37:19 70.06,-162.96 65.04 09/09/2025 22:37:56 70.06,-163.03 65.04 2.73 37
10 09/09/2025 23:28:01 -69.95, 4.52 115.06 09/09/2025 23:27:26 -69.96, 4.46 115.05 2.47 35
11 09/12/2025 14:03:39 -70.75, 144.41 113.25 09/12/2025 14:04:48 -70.65, 146.07 113.39 61.87 69
12 09/12/2025 14:54:11 70.02, -47.13 66.02 09/12/2025 14:54:24 70.04, -47.18 66.04 2.91 13
13 09/12/2025 15:44:53 -69.92, 120.34 114.08 09/12/2025 15:43:54 -69.94, 120.31 114.06 2.87 59

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/30/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250831.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/30/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-8