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: 4/29/2023
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 05/01/2023 07:34:29 -70.10,-117.51 125.00 05/01/2023 07:35:12 -70.12,-117.48 124.99 2.34 43
2 05/01/2023 08:25:13 69.98, 49.99 54.86 05/01/2023 08:24:40 69.96, 49.95 54.85 2.43 33
3 05/03/2023 23:00:53 70.67,-169.96 54.80 05/03/2023 23:02:02 70.55,-168.60 54.64 51.84 69
4 05/03/2023 23:51:25 -70.05, -1.67 125.85 05/03/2023 23:51:39 -70.05, -1.69 125.86 0.44 14
5 05/04/2023 00:42:09 69.93, 165.82 54.02 05/04/2023 00:41:06 69.95, 165.81 54.03 1.59 63
6 05/06/2023 15:17:39 70.11, -53.31 53.45 05/06/2023 15:18:35 70.12, -53.33 53.46 1.99 56
7 05/06/2023 16:08:21 -70.02, 114.14 126.66 05/06/2023 16:08:05 -70.01, 114.15 126.66 0.56 16
8 05/06/2023 16:58:52 69.21, -77.37 52.51 05/06/2023 16:57:44 69.24, -79.26 52.58 74.40 68
9 05/09/2023 07:34:35 70.09, 62.48 52.70 05/09/2023 07:35:00 70.11, 62.54 52.71 3.52 25
10 05/09/2023 08:25:16 -69.94,-129.99 127.47 05/09/2023 08:24:31 -69.95,-130.06 127.46 2.63 45
11 05/11/2023 23:00:46 -70.20, 10.77 127.89 05/11/2023 23:01:57 -70.19, 10.90 127.91 4.98 71
12 05/11/2023 23:51:29 70.03, 178.33 51.94 05/11/2023 23:51:25 70.02, 178.30 51.92 2.01 4
13 05/12/2023 00:42:09 -69.83, -14.06 128.28 05/12/2023 00:40:56 -69.85, -14.29 128.25 9.47 73

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/29/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230429.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/29/2023 in txt file.

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