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: 4/6/2025
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 04/08/2025 06:19:50 -70.25, -98.82 117.12 04/08/2025 06:20:55 -70.22, -98.80 117.16 3.28 65
2 04/08/2025 07:10:33 70.11, 68.70 62.73 04/08/2025 07:10:22 70.11, 68.70 62.73 0.49 11
3 04/08/2025 08:01:09 -69.68,-123.33 117.74 04/08/2025 07:59:57 -69.72,-124.21 117.66 34.24 72
4 04/10/2025 22:36:39 -70.18, 17.07 118.19 04/10/2025 22:37:21 -70.19, 17.04 118.19 1.23 42
5 04/10/2025 23:27:23 70.10,-175.50 61.72 04/10/2025 23:26:48 70.08,-175.47 61.70 2.73 35
6 04/13/2025 14:02:59 70.88, -35.59 61.59 04/13/2025 14:04:07 70.82, -33.76 61.47 66.97 68
7 04/13/2025 14:53:30 -70.18, 132.85 119.17 04/13/2025 14:53:47 -70.16, 132.90 119.19 2.53 17
8 04/13/2025 15:44:13 70.05, -59.64 60.69 04/13/2025 15:43:14 70.05, -59.61 60.70 0.98 59
9 04/16/2025 06:19:37 70.22, 81.27 59.93 04/16/2025 06:20:43 70.20, 81.21 59.91 2.71 66
10 04/16/2025 07:10:20 -70.14,-111.30 120.17 04/16/2025 07:10:12 -70.15,-111.23 120.16 2.69 8
11 04/16/2025 08:00:56 69.65, 56.75 59.31 04/16/2025 07:59:45 69.70, 55.79 59.40 37.61 71
12 04/18/2025 22:36:27 70.20,-162.91 58.97 04/18/2025 22:37:07 70.20,-162.90 58.96 0.38 40
13 04/18/2025 23:27:09 -70.07, 4.60 121.18 04/18/2025 23:26:37 -70.09, 4.58 121.16 2.46 32

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/6/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250406.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/06/2025 in txt file.

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