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: 4/1/2025
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 04/02/2025 22:36:51 70.16,-162.95 64.82 04/02/2025 22:37:26 70.17,-162.99 64.82 1.63 35
2 04/02/2025 23:27:33 -70.05, 4.54 115.32 04/02/2025 23:26:56 -70.05, 4.49 115.31 2.17 37
3 04/05/2025 14:03:10 -70.83, 144.46 115.49 04/05/2025 14:04:19 -70.72, 146.06 115.66 60.17 69
4 04/05/2025 14:53:42 70.12, -47.10 63.75 04/05/2025 14:53:55 70.12, -47.17 63.75 2.58 13
5 04/05/2025 15:44:25 -70.06, 120.31 116.33 04/05/2025 15:43:24 -70.07, 120.39 116.32 3.07 61
6 04/08/2025 06:19:49 -70.22, -98.79 117.14 04/08/2025 06:20:55 -70.21, -98.82 117.17 2.29 66
7 04/08/2025 07:10:32 70.09, 68.73 62.71 04/08/2025 07:10:22 70.10, 68.67 62.72 2.01 10
8 04/08/2025 08:01:08 -69.65,-123.30 117.76 04/08/2025 07:59:57 -69.71,-124.23 117.67 36.32 71
9 04/10/2025 22:36:40 -70.20, 17.03 118.16 04/10/2025 22:37:22 -70.20, 17.05 118.18 1.31 42
10 04/10/2025 23:27:23 70.08,-175.47 61.70 04/10/2025 23:26:49 70.08,-175.46 61.71 0.58 34
11 04/13/2025 14:03:01 70.96, -35.72 61.67 04/13/2025 14:04:08 70.85, -33.72 61.50 73.58 67
12 04/13/2025 14:53:30 -70.15, 132.91 119.20 04/13/2025 14:53:49 -70.14, 132.87 119.21 1.50 19
13 04/13/2025 15:44:13 70.02, -59.60 60.66 04/13/2025 15:43:16 70.03, -59.65 60.68 2.24 57

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/1/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250401.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 04/01/2025 in txt file.

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