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: 4/3/2025
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 04/05/2025 14:03:10 -70.84, 144.45 115.49 04/05/2025 14:04:19 -70.70, 146.04 115.68 60.12 69
2 04/05/2025 14:53:43 70.18, -47.19 63.81 04/05/2025 14:53:54 70.16, -47.11 63.79 3.17 11
3 04/05/2025 15:44:25 -70.06, 120.31 116.33 04/05/2025 15:43:24 -70.05, 120.36 116.33 2.39 61
4 04/08/2025 06:19:49 -70.23, -98.80 117.14 04/08/2025 06:20:54 -70.23, -98.78 117.15 0.50 65
5 04/08/2025 07:10:32 70.10, 68.72 62.72 04/08/2025 07:10:21 70.12, 68.71 62.74 2.70 11
6 04/08/2025 08:01:08 -69.66,-123.31 117.76 04/08/2025 07:59:56 -69.74,-124.20 117.65 35.16 72
7 04/10/2025 22:36:40 -70.21, 17.02 118.15 04/10/2025 22:37:21 -70.20, 17.06 118.18 2.15 41
8 04/10/2025 23:27:23 70.08,-175.47 61.70 04/10/2025 23:26:48 70.09,-175.45 61.71 0.83 35
9 04/13/2025 14:03:00 70.91, -35.64 61.62 04/13/2025 14:04:08 70.78, -33.83 61.42 67.63 68
10 04/13/2025 14:53:30 -70.15, 132.89 119.19 04/13/2025 14:53:47 -70.17, 132.91 119.18 2.48 17
11 04/13/2025 15:44:13 70.03, -59.61 60.67 04/13/2025 15:43:14 70.06, -59.60 60.71 3.57 59
12 04/16/2025 06:19:38 70.24, 81.23 59.95 04/16/2025 06:20:43 70.21, 81.23 59.92 3.16 65
13 04/16/2025 07:10:20 -70.11,-111.25 120.20 04/16/2025 07:10:13 -70.11,-111.29 120.20 1.59 7
14 04/16/2025 08:00:56 69.62, 56.80 59.28 04/16/2025 07:59:45 69.71, 55.81 59.41 39.75 71

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/3/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250403.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/03/2025 in txt file.

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