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: 5/13/2023
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 05/14/2023 15:17:42 -70.11, 126.65 128.63 05/14/2023 15:18:38 -70.11, 126.61 128.65 1.61 56
2 05/14/2023 16:08:26 69.99, -65.85 51.23 05/14/2023 16:08:05 70.01, -65.89 51.25 2.30 21
3 05/14/2023 16:58:55 -69.22, 102.58 129.57 05/14/2023 16:57:46 -69.28, 100.77 129.46 71.92 69
4 05/17/2023 07:34:37 -70.05,-117.50 129.32 05/17/2023 07:35:06 -70.07,-117.57 129.31 2.92 29
5 05/17/2023 08:25:22 69.98, 49.92 50.60 05/17/2023 08:24:33 69.96, 49.93 50.58 2.59 49
6 05/19/2023 23:00:52 70.20,-169.27 50.25 05/19/2023 23:02:03 70.16,-169.19 50.20 5.30 71
7 05/19/2023 23:51:32 -70.06, -1.74 129.90 05/19/2023 23:51:32 -70.05, -1.71 129.92 1.46 0
8 05/20/2023 00:42:13 69.78, 165.99 49.81 05/20/2023 00:41:01 69.83, 165.63 49.87 15.02 72
9 05/22/2023 15:17:45 70.10, -53.37 49.61 05/22/2023 15:18:29 70.10, -53.39 49.60 0.95 44
10 05/22/2023 16:08:27 -70.02, 114.09 130.49 05/22/2023 16:07:59 -69.99, 114.10 130.51 2.60 28
11 05/25/2023 06:44:09 -70.87,-106.13 130.09 05/25/2023 06:45:17 -70.78,-104.14 130.23 73.31 68
12 05/25/2023 07:34:40 70.08, 62.44 49.08 05/25/2023 07:34:55 70.06, 62.45 49.07 1.59 15
13 05/25/2023 08:25:22 -69.98,-130.10 131.02 05/25/2023 08:24:25 -69.96,-130.06 131.05 3.22 57

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/13/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230513.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/13/2023 in txt file.

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