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: 4/28/2025
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 04/29/2025 14:02:53 71.05, -35.84 56.35 04/29/2025 14:04:00 70.93, -33.62 56.18 81.52 67
2 04/29/2025 14:53:20 -70.15, 132.93 124.60 04/29/2025 14:53:42 -70.16, 132.87 124.59 2.55 22
3 04/29/2025 15:44:04 70.05, -59.61 55.29 04/29/2025 15:43:09 70.06, -59.63 55.30 1.28 55
4 05/02/2025 06:19:35 70.22, 81.26 54.67 05/02/2025 06:20:41 70.21, 81.19 54.66 2.80 66
5 05/02/2025 07:10:18 -70.16,-111.33 125.40 05/02/2025 07:10:10 -70.16,-111.26 125.41 2.74 8
6 05/02/2025 08:00:54 69.63, 56.76 54.05 05/02/2025 07:59:43 69.72, 55.77 54.17 39.26 71
7 05/04/2025 22:36:33 70.19,-162.94 53.86 05/04/2025 22:37:10 70.17,-163.00 53.84 3.14 37
8 05/04/2025 23:27:15 -70.08, 4.55 126.27 05/04/2025 23:26:40 -70.06, 4.48 126.28 3.26 35
9 05/07/2025 14:02:55 -70.69, 144.71 126.36 05/07/2025 14:04:05 -70.58, 145.83 126.50 43.05 70
10 05/07/2025 14:53:31 70.17, -47.15 53.10 05/07/2025 14:53:38 70.14, -47.16 53.06 3.37 7
11 05/07/2025 15:44:13 -70.06, 120.33 127.03 05/07/2025 15:43:08 -70.03, 120.32 127.05 3.09 65
12 05/10/2025 06:19:44 -70.21, -98.77 127.57 05/10/2025 06:20:38 -70.24, -98.78 127.55 2.94 54
13 05/10/2025 07:10:28 70.11, 68.69 52.32 05/10/2025 07:10:05 70.13, 68.70 52.33 1.55 23

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/28/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250428.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/28/2025 in txt file.

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