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: 4/25/2025
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 04/26/2025 22:36:22 -70.22, 17.06 123.68 04/26/2025 22:37:11 -70.22, 17.08 123.69 0.93 49
2 04/26/2025 23:27:06 70.12,-175.48 56.21 04/26/2025 23:26:38 70.12,-175.42 56.20 2.52 28
3 04/29/2025 14:02:53 71.06, -35.87 56.37 04/29/2025 14:04:00 70.93, -33.63 56.17 82.62 67
4 04/29/2025 14:53:20 -70.16, 132.91 124.59 04/29/2025 14:53:42 -70.16, 132.87 124.59 1.54 22
5 04/29/2025 15:44:04 70.07, -59.64 55.31 04/29/2025 15:43:09 70.05, -59.64 55.30 1.22 55
6 05/02/2025 06:19:36 70.23, 81.24 54.68 05/02/2025 06:20:42 70.23, 81.21 54.68 1.39 66
7 05/02/2025 07:10:18 -70.11,-111.27 125.45 05/02/2025 07:10:12 -70.12,-111.31 125.44 2.12 6
8 05/02/2025 08:00:55 69.64, 56.75 54.06 05/02/2025 07:59:44 69.74, 55.80 54.18 38.09 71
9 05/04/2025 22:36:34 70.19,-162.94 53.86 05/04/2025 22:37:11 70.22,-162.94 53.89 3.43 37
10 05/04/2025 23:27:17 -70.13, 4.47 126.21 05/04/2025 23:26:41 -70.11, 4.55 126.23 3.40 36
11 05/07/2025 14:02:56 -70.73, 144.65 126.32 05/07/2025 14:04:06 -70.61, 145.88 126.47 47.04 70
12 05/07/2025 14:53:31 70.16, -47.14 53.08 05/07/2025 14:53:39 70.17, -47.12 53.10 1.77 8
13 05/07/2025 15:44:13 -70.05, 120.35 127.04 05/07/2025 15:43:09 -70.07, 120.36 127.02 2.69 64

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/25/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250425.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/25/2025 in txt file.

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