Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/31/2023
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 08/31/2023 23:50:51 70.03, 178.34 61.53 08/31/2023 23:51:56 70.00, 178.34 61.49 3.51 65
2 09/01/2023 00:41:32 -69.90, -14.14 118.60 09/01/2023 00:41:26 -69.88, -14.18 118.61 2.06 6
3 09/01/2023 01:32:10 69.45, 153.82 60.95 09/01/2023 01:30:58 69.51, 152.94 61.04 34.72 72
4 09/03/2023 16:07:46 70.00, -65.86 62.47 09/03/2023 16:08:25 69.99, -65.79 62.45 3.29 39
5 09/03/2023 16:58:27 -69.87, 101.66 117.66 09/03/2023 16:57:55 -69.88, 101.69 117.65 1.56 32
6 09/06/2023 07:34:10 -70.74,-118.56 115.80 09/06/2023 07:35:18 -70.61,-116.65 115.98 71.98 68
7 09/06/2023 08:24:41 69.93, 50.01 63.38 09/06/2023 08:24:55 69.96, 50.05 63.40 2.91 14
8 09/06/2023 09:15:22 -69.80,-142.47 116.75 09/06/2023 09:14:26 -69.80,-142.54 116.75 2.86 56
9 09/08/2023 23:50:52 -69.99, -1.62 115.58 09/08/2023 23:51:58 -70.01, -1.63 115.56 2.57 66
10 09/09/2023 00:41:36 69.87, 165.87 64.31 09/09/2023 00:41:25 69.90, 165.85 64.34 3.41 11
11 09/09/2023 01:32:12 -69.47, -26.22 116.09 09/09/2023 01:31:00 -69.52, -27.03 116.01 32.15 72
12 09/11/2023 16:07:48 -69.98, 114.15 114.58 09/11/2023 16:08:27 -69.99, 114.22 114.57 2.87 39
13 09/11/2023 16:58:32 69.87, -78.36 65.32 09/11/2023 16:57:54 69.88, -78.30 65.33 2.86 38

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/31/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230831.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/31/2023 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-9