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: 7/31/2023
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 08/02/2023 15:17:25 -70.89, 125.42 126.77 08/02/2023 15:18:32 -70.75, 127.69 127.02 84.33 67
2 08/02/2023 16:07:54 70.00, -65.85 52.29 08/02/2023 16:08:11 70.00, -65.77 52.28 2.94 17
3 08/02/2023 16:58:35 -69.86, 101.69 127.85 08/02/2023 16:57:41 -69.88, 101.70 127.82 2.76 54
4 08/05/2023 07:34:03 -70.16,-117.62 126.85 08/05/2023 07:35:14 -70.14,-117.34 126.89 10.82 71
5 08/05/2023 08:24:45 69.95, 50.01 52.94 08/05/2023 08:24:43 69.93, 50.01 52.92 2.17 2
6 08/05/2023 09:15:26 -69.80,-142.45 127.21 08/05/2023 09:14:13 -69.81,-142.51 127.18 3.02 73
7 08/07/2023 23:50:51 -70.00, -1.60 126.28 08/07/2023 23:51:46 -69.99, -1.67 126.30 2.93 55
8 08/08/2023 00:41:35 69.90, 165.86 53.63 08/08/2023 00:41:13 69.89, 165.83 53.62 1.94 22
9 08/08/2023 01:32:03 -69.06, -25.61 127.24 08/08/2023 01:30:55 -69.12, -27.57 127.10 78.08 68
10 08/10/2023 16:07:42 -69.96, 114.24 125.55 08/10/2023 16:08:16 -69.98, 114.20 125.54 2.69 34
11 08/10/2023 16:58:26 69.86, -78.29 54.35 08/10/2023 16:57:43 69.87, -78.30 54.37 1.65 43
12 08/13/2023 07:34:00 70.50, 61.87 55.81 08/13/2023 07:35:10 70.38, 63.03 55.63 45.24 70
13 08/13/2023 08:24:33 -69.93,-129.92 124.80 08/13/2023 08:24:46 -69.95,-129.96 124.78 2.68 13
14 08/13/2023 09:15:17 69.83, 37.54 55.11 08/13/2023 09:14:13 69.84, 37.53 55.13 1.06 64

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/31/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230731.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/31/2023 in txt file.

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